SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Unitedhealth Group Inc – ‘10-K’ for 12/31/12 – ‘EX-101.CAL’

On:  Wednesday, 2/6/13, at 6:00pm ET   ·   As of:  2/7/13   ·   For:  12/31/12   ·   Accession #:  731766-13-5   ·   File #:  1-10864

Previous ‘10-K’:  ‘10-K’ on 2/9/12 for 12/31/11   ·   Next:  ‘10-K’ on 2/12/14 for 12/31/13   ·   Latest:  ‘10-K’ on 2/28/24 for 12/31/23   ·   5 References:   

Find Words in Filings emoji
 
  in    Show  and   Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

 2/07/13  Unitedhealth Group Inc            10-K       12/31/12  114:25M

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   1.52M 
 2: EX-10.11    Material Contract                                   HTML     38K 
 3: EX-10.32    Material Contract                                   HTML     78K 
 4: EX-10.33    Material Contract                                   HTML     82K 
 5: EX-10.36    Material Contract                                   HTML    104K 
 6: EX-10.37    Material Contract                                   HTML     35K 
 8: EX-21.1     Subsidiaries List                                   HTML    229K 
 9: EX-23.1     Consent of Experts or Counsel                       HTML     34K 
10: EX-24.1     Power of Attorney                                   HTML     43K 
 7: EX-12.1     Statement re: Computation of Ratios                 HTML     47K 
11: EX-31.1     Certification -- §302 - SOA'02                      HTML     50K 
12: EX-32.1     Certification -- §906 - SOA'02                      HTML     38K 
78: R1          Document and Entity Information Document            HTML     62K 
63: R2          Condensed Consolidated Balance Sheets               HTML    164K 
74: R3          Condensed Consolidated Balance Sheet                HTML     69K 
                (Parenthetical) (Parentheticals)                                 
82: R4          Condensed Consolidated Statements of Operations     HTML    125K 
104: R5          Condensed Consolidated Statements of Comprehensive  HTML     92K  
                Income                                                           
65: R6          Condensed Consolidated Statements of Changes in     HTML    109K 
                Shareholders' Equity                                             
73: R7          Condensed Consolidated Statements of Cash Flows     HTML    173K 
57: R8          Description of Business                             HTML     38K 
47: R9          Basis of Presentation                               HTML    206K 
106: R10         Investments                                         HTML    270K  
84: R11         Fair Value                                          HTML    336K 
83: R12         Property, Equipment, and Capitalized Software       HTML     59K 
90: R13         Goodwill and Intangible Assets                      HTML    140K 
91: R14         Medical Costs and Medical Costs Payable             HTML     70K 
88: R15         Commercial Paper and Long-Term Debt                 HTML    216K 
92: R16         Income Taxes                                        HTML    158K 
75: R17         Shareholder's Equity                                HTML     65K 
79: R18         Share-Based Compensation                            HTML    119K 
86: R19         Commitments and Contingencies                       HTML     58K 
114: R20         Segment Financial Information                       HTML    307K  
100: R21         Quarterly Financial Data (Unaudited)                HTML     82K  
69: R22         Schedule I                                          HTML    195K 
85: R23         Basis of Presentation (Policy)                      HTML    185K 
71: R24         Fair Value Fair Value Policy (Policies)             HTML     50K 
38: R25         Income Taxes Income Tax (Policies)                  HTML     44K 
101: R26         Shareholder's Equity Shareholder's Equity           HTML     48K  
                (Policies)                                                       
110: R27         Share-Based Compensation Recognition (Policies)     HTML     52K  
52: R28         Segment Financial Information Segment Financial     HTML     43K 
                Information (Policies)                                           
51: R29         Basis of Presentation Basis of Presentation         HTML     75K 
                (Tables)                                                         
55: R30         Investments (Tables)                                HTML    268K 
56: R31         Fair Value (Tables)                                 HTML    324K 
58: R32         Property, Equipment, and Capitalized Software       HTML     58K 
                Property, Equipment, and Capitalized Software                    
                (Tables)                                                         
27: R33         Goodwill and Intangible Assets Goodwill and         HTML    141K 
                Intangible Assets(Tables)                                        
98: R34         Medical Costs and Medical Costs Payable Medical     HTML     72K 
                Cost Development (Tables)                                        
67: R35         Commercial Paper and Long-Term Debt (Tables)        HTML    210K 
70: R36         Income Taxes Income Tax (Tables)                    HTML    155K 
42: R37         Shareholder's Equity Shareholder's Equity (Tables)  HTML     43K 
113: R38         Share-Based Compensation (Tables)                   HTML    117K  
19: R39         Commitments and Contingencies Commitments and       HTML     46K 
                Contingencies (Tables)                                           
60: R40         Segment Financial Information (Tables)              HTML    292K 
103: R41         Quarterly Financial Data (Unaudited) Quarterly      HTML     80K  
                Financial Data (Unaudited) (Tables)                              
40: R42         Schedule I Schedule I (Tables)                      HTML    196K 
50: R43         Basis of Presentation Basis of Presentation Useful  HTML     37K 
                lives for property, equipment and capitalized                    
                software (Details)                                               
54: R44         Basis of Presentation Basis of Presentation         HTML     39K 
                Medicare Part D (Details)                                        
64: R45         Basis of Presentation Basis of Presentation         HTML     93K 
                Narrative (Details)                                              
26: R46         Investments (Narrative) (Details)                   HTML     37K 
46: R47         Investments (Short-Term and Long-Term Investments)  HTML     91K 
                (Details)                                                        
22: R48         Investments (Fair Value of Mortgage-Backed          HTML     54K 
                Securities by Credit Rating Origination) (Details)               
102: R49         Investments (Amortized Cost and Fair Value of       HTML     80K  
                Available-for-Sale Debt Securities by Contractual                
                Maturity) (Details)                                              
39: R50         Investments (Amortized Cost and Fair Value of       HTML     67K 
                Held-To-Maturity Debt Securities by Contractual                  
                Maturity) (Details)                                              
99: R51         Investments (Fair Value of Available-For-Sale       HTML     63K 
                Investments with Gross Unrealized Losses by                      
                Investment Type and Length of Time That Individual               
                Securities Have Been in a Continuous Unrealized                  
                Loss Position) (Details)                                         
43: R52         Investments (Net Realized Gains) (Details)          HTML     55K 
61: R53         Fair Value (Narrative) (Details)                    HTML     57K 
21: R54         Fair Value (Financial Assets and Liabilities,       HTML     76K 
                Excluding AARP, Measured at Fair Value on a                      
                Recurring Basis) (Details)                                       
24: R55         Fair Value (Financial Assets and Liabilities,       HTML     58K 
                Excluding AARP, Not Measured at Fair Value on a                  
                Recurring Basis) (Details)                                       
53: R56         Fair Value (Reconciliation of Assets Measured at    HTML     62K 
                Fair Value on a Recurring Basis Using Level 3                    
                Inputs) (Details)                                                
31: R57         Fair Value (Assets and Liabilities measured at      HTML     78K 
                fair value on a recurring basis) (Details)                       
107: R58         Fair Value Fair Value Inputs Assets Quantitative    HTML     43K  
                Information (Details)                                            
66: R59         Property, Equipment, and Capitalized Software       HTML     41K 
                Property, Equipment, and Capitalized Software                    
                Narrative (Details)                                              
89: R60         Property, Equipment, and Capitalized Software       HTML     63K 
                Property, Equipment, and Capitalized Software                    
                table (Details)                                                  
45: R61         Goodwill and Intangible Assets Goodwill and         HTML     90K 
                Intangible Assets Narrative (Details)                            
48: R62         Goodwill and Intangible Assets Goodwill (Changes    HTML     61K 
                in the Carrying Amount of Goodwill by Reporting                  
                Segment) (Details)                                               
96: R63         Goodwill and Intangible Assets Goodwill (Net        HTML     62K 
                Tangible Assets Acquired in Amil Acquisition)                    
                (Details)                                                        
93: R64         Goodwill and Intangible Assets Goodwill and Other   HTML     54K 
                Intangible Assets Gross carrying value,                          
                accumulated amortization and net carrying value of               
                intangible assets (Details)                                      
68: R65         Goodwill and Intangible Assets Goodwill and Other   HTML     44K 
                Intangible Assets Weighted-average useful lives                  
                assigned to finite-lived intangible assets                       
                acquired in business combinations (Details)                      
95: R66         Goodwill and Intangible Assets Goodwill and Other   HTML     43K 
                Intangible Assets Amortization Expense relating to               
                Intangible Assets (Details)                                      
44: R67         Medical Costs and Medical Costs Payable (Details)   HTML     35K 
72: R68         Medical Costs and Medical Costs Payable Medical     HTML     58K 
                Costs and Medical Costs Payable Rollforward                      
                (Details)                                                        
109: R69         Commercial Paper and Long-Term Debt (Narrative)     HTML     96K  
                (Details)                                                        
23: R70         Commercial Paper and Long-Term Debt (Commercial     HTML    107K 
                Paper and Long-Term Debt) (Details)                              
37: R71         Commercial Paper and Long-Term Debt Commercial      HTML     51K 
                Paper and Long-Term Debt Maturities of commercial                
                paper and long-term debt (Details)                               
62: R72         Income Taxes Income Tax Narrative (Details)         HTML     53K 
29: R73         Income Taxes Income Taxes Components of the         HTML     59K 
                provision for income taxes (Details)                             
112: R74         Income Taxes Income Taxes Reconciliation of the     HTML     81K  
                tax provision at the U.S. Federal Statutory Rate                 
                to the provision for income taxes (Details)                      
41: R75         Income Taxes Income taxes components of deferred    HTML    105K 
                tax assets and liabilities (Details)                             
32: R76         Income Taxes Income Taxes Reconciliation of the     HTML     53K 
                beginning and ending amount of unrecognized tax                  
                benefits (Details)                                               
36: R77         Shareholder's Equity Shareholder's Equity           HTML     80K 
                (Details)                                                        
25: R78         Share-Based Compensation (Narrative) (Details)      HTML     40K 
28: R79         Share-Based Compensation (Stock Option and SAR      HTML     88K 
                Activity) (Details)                                              
80: R80         Share-Based Compensation (Restricted Share          HTML     62K 
                Activity) (Details)                                              
34: R81         Share-Based Compensation Other Share-Based          HTML     69K 
                Compensation Data (Details)                                      
108: R82         Share-Based Compensation (Share-Based Compensation  HTML     52K  
                Principal Fair Value Assumptions) (Details)                      
59: R83         Commitments and Contingencies (Details)             HTML     41K 
87: R84         Commitments and Contingencies Future Lease          HTML     55K 
                Payments (Details)                                               
94: R85         Segment Financial Information (Details)             HTML    147K 
33: R86         Segment Financial Information Segment Financial     HTML     42K 
                Information (Narrative) (Details)                                
35: R87         Quarterly Financial Data (Unaudited) Quarterly      HTML     62K 
                Financial Data (Unaudited) (Details)                             
105: R88         Schedule I (Details)                                HTML     56K  
30: R89         Schedule I Schedule I Condensed Balance Sheet       HTML    117K 
                (Details)                                                        
81: R90         Schedule I Schedule I Condensed Balanch Sheet       HTML     59K 
                (Parentheticals) (Details)                                       
77: R91         Schedule I Schedule I Condensed Statment of         HTML     90K 
                Operations (Details)                                             
97: R92         Schedule I Schedule I Statement of Cash Flows       HTML    105K 
                (Details)                                                        
76: R93         Schedule I Parent Commercial Paper and Long-Term    HTML     48K 
                Debt Maturities of commercial paper and long-term                
                debt (Details)                                                   
111: XML         IDEA XML File -- Filing Summary                      XML    178K  
49: EXCEL       IDEA Workbook of Financial Reports (.xls)            XLS   4.30M 
13: EX-101.INS  XBRL Instance -- unh-20121231                        XML   6.42M 
15: EX-101.CAL  XBRL Calculations -- unh-20121231_cal                XML    305K 
16: EX-101.DEF  XBRL Definitions -- unh-20121231_def                 XML   1.35M 
17: EX-101.LAB  XBRL Labels -- unh-20121231_lab                      XML   2.60M 
18: EX-101.PRE  XBRL Presentations -- unh-20121231_pre               XML   1.67M 
14: EX-101.SCH  XBRL Schema -- unh-20121231                          XSD    274K 
20: ZIP         XBRL Zipped Folder -- 0000731766-13-000005-xbrl      Zip    462K 


‘EX-101.CAL’   —   XBRL Calculations — unh-20121231_cal


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with WebFilings -->
<!-- -->
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<roleRef roleURI="http://www.uhc.com/role/BasisOfPresentation" xlink:href="unh-20121231.xsd#BasisOfPresentation" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationMedicarePartDDetails" xlink:href="unh-20121231.xsd#BasisOfPresentationBasisOfPresentationMedicarePartDDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationNarrativeDetails" xlink:href="unh-20121231.xsd#BasisOfPresentationBasisOfPresentationNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationTables" xlink:href="unh-20121231.xsd#BasisOfPresentationBasisOfPresentationTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationUsefulLivesForPropertyEquipmentAndCapitalizedSoftwareDetails" xlink:href="unh-20121231.xsd#BasisOfPresentationBasisOfPresentationUsefulLivesForPropertyEquipmentAndCapitalizedSoftwareDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/BasisOfPresentationPolicy" xlink:href="unh-20121231.xsd#BasisOfPresentationPolicy" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommercialPaperAndLongTermDebt" xlink:href="unh-20121231.xsd#CommercialPaperAndLongTermDebt" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommercialPaperAndLongTermDebtCommercialPaperAndLongTermDebtDetails" xlink:href="unh-20121231.xsd#CommercialPaperAndLongTermDebtCommercialPaperAndLongTermDebtDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommercialPaperAndLongTermDebtCommercialPaperAndLongTermDebtMaturitiesOfCommercialPaperAndLongTermDebtDetails" xlink:href="unh-20121231.xsd#CommercialPaperAndLongTermDebtCommercialPaperAndLongTermDebtMaturitiesOfCommercialPaperAndLongTermDebtDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommercialPaperAndLongTermDebtNarrativeDetails" xlink:href="unh-20121231.xsd#CommercialPaperAndLongTermDebtNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommercialPaperAndLongTermDebtTables" xlink:href="unh-20121231.xsd#CommercialPaperAndLongTermDebtTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommitmentsAndContingencies" xlink:href="unh-20121231.xsd#CommitmentsAndContingencies" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommitmentsAndContingenciesCommitmentsAndContingenciesTables" xlink:href="unh-20121231.xsd#CommitmentsAndContingenciesCommitmentsAndContingenciesTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommitmentsAndContingenciesDetails" xlink:href="unh-20121231.xsd#CommitmentsAndContingenciesDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CommitmentsAndContingenciesFutureLeasePaymentsDetails" xlink:href="unh-20121231.xsd#CommitmentsAndContingenciesFutureLeasePaymentsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CondensedConsolidatedBalanceSheetParentheticalParentheticals" xlink:href="unh-20121231.xsd#CondensedConsolidatedBalanceSheetParentheticalParentheticals" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CondensedConsolidatedBalanceSheets" xlink:href="unh-20121231.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:href="unh-20121231.xsd#CondensedConsolidatedStatementsOfCashFlows" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CondensedConsolidatedStatementsOfChangesInShareholdersEquity" xlink:href="unh-20121231.xsd#CondensedConsolidatedStatementsOfChangesInShareholdersEquity" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:href="unh-20121231.xsd#CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/CondensedConsolidatedStatementsOfOperations" xlink:href="unh-20121231.xsd#CondensedConsolidatedStatementsOfOperations" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/DescriptionOfBusiness" xlink:href="unh-20121231.xsd#DescriptionOfBusiness" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/DescriptionOfBusinessDetails" xlink:href="unh-20121231.xsd#DescriptionOfBusinessDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/DescriptionOfBusinessTables" xlink:href="unh-20121231.xsd#DescriptionOfBusinessTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/DocumentAndEntityInformationDocument" xlink:href="unh-20121231.xsd#DocumentAndEntityInformationDocument" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValue" xlink:href="unh-20121231.xsd#FairValue" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" xlink:href="unh-20121231.xsd#FairValueAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueFairValueInputsAssetsQuantitativeInformationDetails" xlink:href="unh-20121231.xsd#FairValueFairValueInputsAssetsQuantitativeInformationDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueFairValuePolicyPolicies" xlink:href="unh-20121231.xsd#FairValueFairValuePolicyPolicies" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueFinancialAssetsAndLiabilitiesExcludingAarpMeasuredAtFairValueOnRecurringBasisDetails" xlink:href="unh-20121231.xsd#FairValueFinancialAssetsAndLiabilitiesExcludingAarpMeasuredAtFairValueOnRecurringBasisDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueFinancialAssetsAndLiabilitiesExcludingAarpNotMeasuredAtFairValueOnRecurringBasisDetails" xlink:href="unh-20121231.xsd#FairValueFinancialAssetsAndLiabilitiesExcludingAarpNotMeasuredAtFairValueOnRecurringBasisDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueNarrativeDetails" xlink:href="unh-20121231.xsd#FairValueNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueReconciliationOfAssetsMeasuredAtFairValueOnRecurringBasisUsingLevel3InputsDetails" xlink:href="unh-20121231.xsd#FairValueReconciliationOfAssetsMeasuredAtFairValueOnRecurringBasisUsingLevel3InputsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/FairValueTables" xlink:href="unh-20121231.xsd#FairValueTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssets" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssets" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndIntangibleAssetsNarrativeDetails" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssetsGoodwillAndIntangibleAssetsNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndIntangibleAssetstables" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssetsGoodwillAndIntangibleAssetstables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsAmortizationExpenseRelatingToIntangibleAssetsDetails" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsAmortizationExpenseRelatingToIntangibleAssetsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsGrossCarryingValueAccumulatedAmortizationAndNetCarryingValueOfIntangibleAssetsDetails" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsGrossCarryingValueAccumulatedAmortizationAndNetCarryingValueOfIntangibleAssetsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsWeightedAverageUsefulLivesAssignedToFiniteLivedIntangibleAssetsAcquiredInBusinessCombinationsDetails" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsWeightedAverageUsefulLivesAssignedToFiniteLivedIntangibleAssetsAcquiredInBusinessCombinationsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillChangesInCarryingAmountOfGoodwillByReportingSegmentDetails" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssetsGoodwillChangesInCarryingAmountOfGoodwillByReportingSegmentDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillNetTangibleAssetsAcquiredInAmilAcquisitionDetails" xlink:href="unh-20121231.xsd#GoodwillAndIntangibleAssetsGoodwillNetTangibleAssetsAcquiredInAmilAcquisitionDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxes" xlink:href="unh-20121231.xsd#IncomeTaxes" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxNarrativeDetails" xlink:href="unh-20121231.xsd#IncomeTaxesIncomeTaxNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxPolicies" xlink:href="unh-20121231.xsd#IncomeTaxesIncomeTaxPolicies" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxTables" xlink:href="unh-20121231.xsd#IncomeTaxesIncomeTaxTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxesComponentsOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:href="unh-20121231.xsd#IncomeTaxesIncomeTaxesComponentsOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxesComponentsOfProvisionForIncomeTaxesDetails" xlink:href="unh-20121231.xsd#IncomeTaxesIncomeTaxesComponentsOfProvisionForIncomeTaxesDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxesReconciliationOfBeginningAndEndingAmountOfUnrecognizedTaxBenefitsDetails" xlink:href="unh-20121231.xsd#IncomeTaxesIncomeTaxesReconciliationOfBeginningAndEndingAmountOfUnrecognizedTaxBenefitsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxesReconciliationOfTaxProvisionAtUSFederalStatutoryRateToProvisionForIncomeTaxesDetails" xlink:href="unh-20121231.xsd#IncomeTaxesIncomeTaxesReconciliationOfTaxProvisionAtUSFederalStatutoryRateToProvisionForIncomeTaxesDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/Investments" xlink:href="unh-20121231.xsd#Investments" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsAmortizedCostAndFairValueOfAvailableForSaleDebtSecuritiesByContractualMaturityDetails" xlink:href="unh-20121231.xsd#InvestmentsAmortizedCostAndFairValueOfAvailableForSaleDebtSecuritiesByContractualMaturityDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsAmortizedCostAndFairValueOfHeldToMaturityDebtSecuritiesByContractualMaturityDetails" xlink:href="unh-20121231.xsd#InvestmentsAmortizedCostAndFairValueOfHeldToMaturityDebtSecuritiesByContractualMaturityDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsFairValueOfAvailableForSaleInvestmentsWithGrossUnrealizedLossesByInvestmentTypeAndLengthOfTimeThatIndividualSecuritiesHaveBeenInContinuousUnrealizedLossPositionDetails" xlink:href="unh-20121231.xsd#InvestmentsFairValueOfAvailableForSaleInvestmentsWithGrossUnrealizedLossesByInvestmentTypeAndLengthOfTimeThatIndividualSecuritiesHaveBeenInContinuousUnrealizedLossPositionDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsFairValueOfMortgageBackedSecuritiesByCreditRatingOriginationDetails" xlink:href="unh-20121231.xsd#InvestmentsFairValueOfMortgageBackedSecuritiesByCreditRatingOriginationDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsNarrativeDetails" xlink:href="unh-20121231.xsd#InvestmentsNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsNetRealizedGainsDetails" xlink:href="unh-20121231.xsd#InvestmentsNetRealizedGainsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsShortTermAndLongTermInvestmentsDetails" xlink:href="unh-20121231.xsd#InvestmentsShortTermAndLongTermInvestmentsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/InvestmentsTables" xlink:href="unh-20121231.xsd#InvestmentsTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayable" xlink:href="unh-20121231.xsd#MedicalCostsAndMedicalCostsPayable" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableDetails" xlink:href="unh-20121231.xsd#MedicalCostsAndMedicalCostsPayableDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableMedicalCostDevelopmentTables" xlink:href="unh-20121231.xsd#MedicalCostsAndMedicalCostsPayableMedicalCostDevelopmentTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableMedicalCostsAndMedicalCostsPayableRollforwardDetails" xlink:href="unh-20121231.xsd#MedicalCostsAndMedicalCostsPayableMedicalCostsAndMedicalCostsPayableRollforwardDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftware" xlink:href="unh-20121231.xsd#PropertyEquipmentAndCapitalizedSoftware" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareNarrativeDetails" xlink:href="unh-20121231.xsd#PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTableDetails" xlink:href="unh-20121231.xsd#PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTableDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTables" xlink:href="unh-20121231.xsd#PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/QuarterlyFinancialDataUnaudited" xlink:href="unh-20121231.xsd#QuarterlyFinancialDataUnaudited" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/QuarterlyFinancialDataUnauditedQuarterlyFinancialDataUnauditedDetails" xlink:href="unh-20121231.xsd#QuarterlyFinancialDataUnauditedQuarterlyFinancialDataUnauditedDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/QuarterlyFinancialDataUnauditedQuarterlyFinancialDataUnauditedTables" xlink:href="unh-20121231.xsd#QuarterlyFinancialDataUnauditedQuarterlyFinancialDataUnauditedTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleI" xlink:href="unh-20121231.xsd#ScheduleI" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleIDetails" xlink:href="unh-20121231.xsd#ScheduleIDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleIParentCommercialPaperAndLongTermDebtMaturitiesOfCommercialPaperAndLongTermDebtDetails" xlink:href="unh-20121231.xsd#ScheduleIParentCommercialPaperAndLongTermDebtMaturitiesOfCommercialPaperAndLongTermDebtDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleIScheduleICondensedBalanceSheetDetails" xlink:href="unh-20121231.xsd#ScheduleIScheduleICondensedBalanceSheetDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleIScheduleICondensedBalanchSheetParentheticalsDetails" xlink:href="unh-20121231.xsd#ScheduleIScheduleICondensedBalanchSheetParentheticalsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleIScheduleICondensedStatmentOfOperationsDetails" xlink:href="unh-20121231.xsd#ScheduleIScheduleICondensedStatmentOfOperationsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleIScheduleIStatementOfCashFlowsDetails" xlink:href="unh-20121231.xsd#ScheduleIScheduleIStatementOfCashFlowsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ScheduleIScheduleITables" xlink:href="unh-20121231.xsd#ScheduleIScheduleITables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/SegmentFinancialInformation" xlink:href="unh-20121231.xsd#SegmentFinancialInformation" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/SegmentFinancialInformationDetails" xlink:href="unh-20121231.xsd#SegmentFinancialInformationDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/SegmentFinancialInformationSegmentFinancialInformationNarrativeDetails" xlink:href="unh-20121231.xsd#SegmentFinancialInformationSegmentFinancialInformationNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/SegmentFinancialInformationSegmentFinancialInformationPolicies" xlink:href="unh-20121231.xsd#SegmentFinancialInformationSegmentFinancialInformationPolicies" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/SegmentFinancialInformationTables" xlink:href="unh-20121231.xsd#SegmentFinancialInformationTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensation" xlink:href="unh-20121231.xsd#ShareBasedCompensation" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensationNarrativeDetails" xlink:href="unh-20121231.xsd#ShareBasedCompensationNarrativeDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensationOtherShareBasedCompensationDataDetails" xlink:href="unh-20121231.xsd#ShareBasedCompensationOtherShareBasedCompensationDataDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensationRecognitionPolicies" xlink:href="unh-20121231.xsd#ShareBasedCompensationRecognitionPolicies" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensationRestrictedShareActivityDetails" xlink:href="unh-20121231.xsd#ShareBasedCompensationRestrictedShareActivityDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensationShareBasedCompensationPrincipalFairValueAssumptionsDetails" xlink:href="unh-20121231.xsd#ShareBasedCompensationShareBasedCompensationPrincipalFairValueAssumptionsDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensationStockOptionAndSarActivityDetails" xlink:href="unh-20121231.xsd#ShareBasedCompensationStockOptionAndSarActivityDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareBasedCompensationTables" xlink:href="unh-20121231.xsd#ShareBasedCompensationTables" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareholdersEquity" xlink:href="unh-20121231.xsd#ShareholdersEquity" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareholdersEquityShareholdersEquityDetails" xlink:href="unh-20121231.xsd#ShareholdersEquityShareholdersEquityDetails" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareholdersEquityShareholdersEquityPolicies" xlink:href="unh-20121231.xsd#ShareholdersEquityShareholdersEquityPolicies" xlink:type="simple"/>
<roleRef roleURI="http://www.uhc.com/role/ShareholdersEquityShareholdersEquityTables" xlink:href="unh-20121231.xsd#ShareholdersEquityShareholdersEquityTables" xlink:type="simple"/>
<calculationLink xlink:role="http://www.uhc.com/role/BasisOfPresentation" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationMedicarePartDDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/BasisOfPresentationBasisOfPresentationUsefulLivesForPropertyEquipmentAndCapitalizedSoftwareDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/BasisOfPresentationPolicy" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommercialPaperAndLongTermDebt" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommercialPaperAndLongTermDebtCommercialPaperAndLongTermDebtDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommercialPaperAndLongTermDebtCommercialPaperAndLongTermDebtMaturitiesOfCommercialPaperAndLongTermDebtDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommercialPaperAndLongTermDebtNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommercialPaperAndLongTermDebtTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommitmentsAndContingencies" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommitmentsAndContingenciesCommitmentsAndContingenciesTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommitmentsAndContingenciesDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CommitmentsAndContingenciesFutureLeasePaymentsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CondensedConsolidatedBalanceSheetParentheticalParentheticals" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_2c254058-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_2c254058-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_30cfd000-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_30cfd000-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShortTermInvestments" xlink:label="loc_us-gaap_ShortTermInvestments_6fb87e70-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ShortTermInvestments_6fb87e70-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_28c3463a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_28c3463a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherReceivablesNetCurrent" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_62b48f2a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_62b48f2a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="unh-20121231.xsd#unh_AarpAssetsUnderManagement" xlink:label="loc_unh_AarpAssetsUnderManagement_45da51ed-aff2-3043-27c9-843112fcca8b" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_AarpAssetsUnderManagement_45da51ed-aff2-3043-27c9-843112fcca8b" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetCurrent_4735dba0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_DeferredTaxAssetsNetCurrent_4735dba0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_66a1ef74-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_2c23c494-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_66a1ef74-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermInvestments" xlink:label="loc_us-gaap_LongTermInvestments_5e9e8882-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_2c254058-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_LongTermInvestments_5e9e8882-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_683dcad8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_2c254058-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_683dcad8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_567ea9de-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_2c254058-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_Goodwill_567ea9de-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5a1fdbbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_2c254058-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5a1fdbbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_62df8554-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_2c254058-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_62df8554-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_5c4fc6ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_5c30a2c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_5c4fc6ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_Liabilities_5c30a2c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_5c188d92-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_5c30a2c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_LiabilitiesCurrent_5c188d92-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense" xlink:label="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_5c6ce590-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_5c188d92-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_5c6ce590-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_28a6846e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_5c188d92-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_28a6846e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherPolicyholderFunds" xlink:label="loc_us-gaap_OtherPolicyholderFunds_640ff1e8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_5c188d92-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherPolicyholderFunds_640ff1e8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_5ea447fe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_5c188d92-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_LongTermDebtCurrent_5ea447fe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredRevenueCurrent" xlink:label="loc_us-gaap_DeferredRevenueCurrent_473bd082-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_5c188d92-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_DeferredRevenueCurrent_473bd082-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_5ea4bd74-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_5c30a2c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_5ea4bd74-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilityForFuturePolicyBenefits" xlink:label="loc_us-gaap_LiabilityForFuturePolicyBenefits_5cced35e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_5c30a2c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_LiabilityForFuturePolicyBenefits_5cced35e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_476c4866-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_5c30a2c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_476c4866-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_63d8f7d8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_5c30a2c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_63d8f7d8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_69f3924a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_5c4fc6ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_69f3924a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_70895bd0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_5c4fc6ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_StockholdersEquity_70895bd0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_664b7ebe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_70895bd0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PreferredStockValue_664b7ebe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_34ddf442-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_70895bd0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CommonStockValue_34ddf442-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaap_AdditionalPaidInCapital_29ca3a8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_70895bd0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AdditionalPaidInCapital_29ca3a8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_6b785646-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_70895bd0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_6b785646-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_29c0ce5e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_70895bd0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_29c0ce5e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_31a4213e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_31a4213e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaap_DepreciationAndAmortization_48adbdfe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_DepreciationAndAmortization_48adbdfe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_472866e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_472866e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_6ec09264-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ShareBasedCompensation_6ec09264-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_62b35f06-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_62b35f06-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_58ea018c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_58ea018c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_595e31f6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="7" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_595e31f6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInHealthCareInsuranceLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInHealthCareInsuranceLiabilities_59827b06-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInHealthCareInsuranceLiabilities_59827b06-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_59244f04-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_59244f04-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInOtherPolicyholderFunds" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherPolicyholderFunds_5977065e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="10" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherPolicyholderFunds_5977065e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_58e591d8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="11" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_611fd732-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_58e591d8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_31a4213e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsToAcquireInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireInvestments_65356968-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PaymentsToAcquireInvestments_65356968-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_67542a54-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities_67542a54-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_6752d8de-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_6752d8de-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_6544a1b2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_6544a1b2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested_67068ec0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested_67068ec0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_651f66f4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_651f66f4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_677afcce-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_60ef698a-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_677afcce-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_31a4213e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_651668c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_651668c4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_67480440-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_67480440-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_65525a64-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_65525a64-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfCommercialPaper" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfCommercialPaper_671476e8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfCommercialPaper_671476e8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_6747dee8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_6747dee8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_6ac93f3a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="6" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_6ac93f3a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="unh-20121231.xsd#unh_InterestRateSwapTermination" xlink:label="loc_unh_InterestRateSwapTermination_8bcc5d35-98d8-83d1-dd1e-84310b2b2f6e" xlink:type="locator"/>
<calculationArc order="7" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_InterestRateSwapTermination_8bcc5d35-98d8-83d1-dd1e-84310b2b2f6e" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInOtherDeposits" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherDeposits_595474ea-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="8" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherDeposits_595474ea-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInBookOverdrafts" xlink:label="loc_us-gaap_IncreaseDecreaseInBookOverdrafts_59336002-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="9" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncreaseDecreaseInBookOverdrafts_59336002-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates" xlink:label="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_653a743a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="10" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_653a743a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_67091b4a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="11" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60f52a96-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_67091b4a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/CondensedConsolidatedStatementsOfChangesInShareholdersEquity" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_38f2d2fa-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_38f2d2fa-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_629be1be-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_38f2d2fa-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_629be1be-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_63bfc6aa-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_629be1be-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_63bfc6aa-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_63942cde-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_63bfc6aa-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_63942cde-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63ba8884-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_63bfc6aa-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_63ba8884-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_631e0ec8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_629be1be-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_631e0ec8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax_62f21714-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_631e0ec8-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax_62f21714-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax_62b119ee-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax_631e0ec8-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax_62b119ee-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_6390c56c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_629be1be-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_6390c56c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/CondensedConsolidatedStatementsOfOperations" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_624609ec-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OperatingIncomeLoss_624609ec-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_624609ec-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PremiumsEarnedNet" xlink:label="loc_us-gaap_PremiumsEarnedNet_6692970e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PremiumsEarnedNet_6692970e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_6c311014-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_SalesRevenueServicesNet_6c311014-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="loc_us-gaap_SalesRevenueGoodsNet_6c240414-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_SalesRevenueGoodsNet_6c240414-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InvestmentIncomeInterestAndDividend" xlink:label="loc_us-gaap_InvestmentIncomeInterestAndDividend_5b42c4d2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_InvestmentIncomeInterestAndDividend_5b42c4d2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_2b88e974-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_2b88e974-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_624609ec-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PolicyholderBenefitsAndClaimsIncurredHealthCare" xlink:label="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredHealthCare_65e82c38-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PolicyholderBenefitsAndClaimsIncurredHealthCare_65e82c38-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_6e581cc0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_6e581cc0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="loc_us-gaap_CostOfGoodsSold_40414a32-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CostOfGoodsSold_40414a32-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaap_DepreciationAndAmortization_48adbdfe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_DepreciationAndAmortization_48adbdfe-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_5a4444fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_InterestExpense_5a4444fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_741fe8a4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7416e4b6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_741fe8a4-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7416e4b6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_7442f1b4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_741fe8a4-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_7442f1b4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/DescriptionOfBusiness" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/DescriptionOfBusinessDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/DescriptionOfBusinessTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/DocumentAndEntityInformationDocument" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValue" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueFairValueInputsAssetsQuantitativeInformationDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueFairValuePolicyPolicies" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueFinancialAssetsAndLiabilitiesExcludingAarpMeasuredAtFairValueOnRecurringBasisDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueFinancialAssetsAndLiabilitiesExcludingAarpNotMeasuredAtFairValueOnRecurringBasisDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueReconciliationOfAssetsMeasuredAtFairValueOnRecurringBasisUsingLevel3InputsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/FairValueTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssets" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndIntangibleAssetsNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndIntangibleAssetstables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsAmortizationExpenseRelatingToIntangibleAssetsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsGrossCarryingValueAccumulatedAmortizationAndNetCarryingValueOfIntangibleAssetsDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5a1fdbbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_59b7200e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5a1fdbbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_59b7200e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_543933d8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5a1fdbbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_543933d8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_54334af4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5a1fdbbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_54334af4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="unh-20121231.xsd#unh_IntangibleAssetsGross" xlink:label="loc_unh_IntangibleAssetsGross_797e1cd6-6a1c-11e2-9cb6-12313d1f36c6" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5a1fdbbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_IntangibleAssetsGross_797e1cd6-6a1c-11e2-9cb6-12313d1f36c6" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillAndOtherIntangibleAssetsWeightedAverageUsefulLivesAssignedToFiniteLivedIntangibleAssetsAcquiredInBusinessCombinationsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillChangesInCarryingAmountOfGoodwillByReportingSegmentDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/GoodwillAndIntangibleAssetsGoodwillNetTangibleAssetsAcquiredInAmilAcquisitionDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxes" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxesIncomeTaxNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxesIncomeTaxPolicies" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxesIncomeTaxTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxesIncomeTaxesComponentsOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxesIncomeTaxesComponentsOfProvisionForIncomeTaxesDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_446dc392-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_446dc392-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_446e35f2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_446dc392-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_446e35f2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_446d43a4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_446dc392-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_446d43a4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_472866e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_472866e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxesIncomeTaxesReconciliationOfBeginningAndEndingAmountOfUnrecognizedTaxBenefitsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/IncomeTaxesIncomeTaxesReconciliationOfTaxProvisionAtUSFederalStatutoryRateToProvisionForIncomeTaxesDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_58552bde-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_58552bde-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_58710a84-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_58710a84-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxSettlementsStateAndLocal" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxSettlementsStateAndLocal_5861a26a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxSettlementsStateAndLocal_5861a26a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome_586f7264-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome_586f7264-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_585736a4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_585736a4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_587a13c2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_587a13c2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4e217a00-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_4e3756d6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4e217a00-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_4e3756d6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_4e3c091a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4e217a00-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_4e3c091a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal_4e4151ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4e217a00-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal_4e4151ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome_4e2254d4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4e217a00-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome_4e2254d4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_4e37d818-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4e217a00-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_4e37d818-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_4e821bbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="6" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4e217a00-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_4e821bbc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/Investments" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsAmortizedCostAndFairValueOfAvailableForSaleDebtSecuritiesByContractualMaturityDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsAmortizedCostAndFairValueOfHeldToMaturityDebtSecuritiesByContractualMaturityDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount_57055a4c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount_570709be-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount_57055a4c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount_570709be-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount_56edc33c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount_57055a4c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount_56edc33c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount_56f494c8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount_57055a4c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount_56f494c8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount_56fababa-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount_57055a4c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount_56fababa-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValue_5709b2c2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue_56f4f382-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValue_5709b2c2-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue_56f4f382-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_56f5c7e4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValue_5709b2c2-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_56f5c7e4-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_56f91480-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValue_5709b2c2-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_56f91480-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue_56f55bec-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValue_5709b2c2-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue_56f55bec-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsFairValueOfAvailableForSaleInvestmentsWithGrossUnrealizedLossesByInvestmentTypeAndLengthOfTimeThatIndividualSecuritiesHaveBeenInContinuousUnrealizedLossPositionDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_2cc11636-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2_287845ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_2cc11636-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2_287845ae-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2_28692c36-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_2cc11636-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2_28692c36-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_2cbed2cc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_2ca3fa1a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_2cbed2cc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_2ca3fa1a-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_2cb0e252-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_2cbed2cc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_2cb0e252-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsFairValueOfMortgageBackedSecuritiesByCreditRatingOriginationDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsNetRealizedGainsDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostMethodInvestmentsRealizedGainLoss" xlink:label="loc_us-gaap_CostMethodInvestmentsRealizedGainLoss_40a7e1fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet" xlink:label="loc_us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet_62ccdf9e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostMethodInvestmentsRealizedGainLoss_40a7e1fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet_62ccdf9e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount" xlink:label="loc_us-gaap_MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount_5f730152-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet_62ccdf9e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount_5f730152-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostMethodInvestmentsRealizedLosses" xlink:label="loc_us-gaap_CostMethodInvestmentsRealizedLosses_410f04cc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostMethodInvestmentsRealizedGainLoss_40a7e1fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CostMethodInvestmentsRealizedLosses_410f04cc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostMethodInvestmentsRealizedGains" xlink:label="loc_us-gaap_CostMethodInvestmentsRealizedGains_416217e8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostMethodInvestmentsRealizedGainLoss_40a7e1fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CostMethodInvestmentsRealizedGains_416217e8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsShortTermAndLongTermInvestmentsDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_57148094-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="loc_us-gaap_HeldToMaturitySecurities_56eee780-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_57148094-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecurities_56eee780-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldtomaturitySecuritiesUnrecognizedHoldingGain" xlink:label="loc_us-gaap_HeldtomaturitySecuritiesUnrecognizedHoldingGain_577093de-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_57148094-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldtomaturitySecuritiesUnrecognizedHoldingGain_577093de-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_HeldToMaturitySecuritiesUnrecognizedHoldingLoss" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesUnrecognizedHoldingLoss_56fe0940-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_57148094-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesUnrecognizedHoldingLoss_56fe0940-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableForSaleSecuritiesFairValueDisclosure" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_2ca70372-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_2ce4a1c8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_2ca70372-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_2ce4a1c8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain" xlink:label="loc_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_28857b48-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_2ca70372-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain_28857b48-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_2cc11636-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueDisclosure_2ca70372-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1_2cc11636-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="loc_us-gaap_InvestmentsFairValueDisclosure_5b922ae0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="unh-20121231.xsd#unh_InvestmentsAmortizedCost" xlink:label="loc_unh_InvestmentsAmortizedCost_822901b8-1c8b-11e2-b3ab-22000a1cf22c" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentsFairValueDisclosure_5b922ae0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_InvestmentsAmortizedCost_822901b8-1c8b-11e2-b3ab-22000a1cf22c" xlink:type="arc"/>
<loc xlink:href="unh-20121231.xsd#unh_InvestmentsGrossUnrealizedGains" xlink:label="loc_unh_InvestmentsGrossUnrealizedGains_aade8f7e-1c8b-11e2-b3ab-22000a1cf22c" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentsFairValueDisclosure_5b922ae0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_InvestmentsGrossUnrealizedGains_aade8f7e-1c8b-11e2-b3ab-22000a1cf22c" xlink:type="arc"/>
<loc xlink:href="unh-20121231.xsd#unh_InvestmentsGrossUnrealizedLosses" xlink:label="loc_unh_InvestmentsGrossUnrealizedLosses_49595cce-1c8c-11e2-b3ab-22000a1cf22c" xlink:type="locator"/>
<calculationArc order="3" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InvestmentsFairValueDisclosure_5b922ae0-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_InvestmentsGrossUnrealizedLosses_49595cce-1c8c-11e2-b3ab-22000a1cf22c" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/InvestmentsTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayable" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableMedicalCostDevelopmentTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableMedicalCostsAndMedicalCostsPayableRollforwardDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftware" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTableDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_683dcad8-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="unh-20121231.xsd#unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet" xlink:label="loc_unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet_e59227a6-58e1-11e2-a043-12313d1f36c6" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_683dcad8-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet_e59227a6-58e1-11e2-a043-12313d1f36c6" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LandAndLandImprovements" xlink:label="loc_us-gaap_LandAndLandImprovements_5be3ccb0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet_e59227a6-58e1-11e2-a043-12313d1f36c6" xlink:to="loc_us-gaap_LandAndLandImprovements_5be3ccb0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BuildingsAndImprovementsGross" xlink:label="loc_us-gaap_BuildingsAndImprovementsGross_2de05450-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet_e59227a6-58e1-11e2-a043-12313d1f36c6" xlink:to="loc_us-gaap_BuildingsAndImprovementsGross_2de05450-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MachineryAndEquipmentGross" xlink:label="loc_us-gaap_MachineryAndEquipmentGross_5f1f8f18-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet_e59227a6-58e1-11e2-a043-12313d1f36c6" xlink:to="loc_us-gaap_MachineryAndEquipmentGross_5f1f8f18-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FurnitureAndFixturesGross" xlink:label="loc_us-gaap_FurnitureAndFixturesGross_550c1f50-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="4" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet_e59227a6-58e1-11e2-a043-12313d1f36c6" xlink:to="loc_us-gaap_FurnitureAndFixturesGross_550c1f50-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation_6839834c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="5" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet_e59227a6-58e1-11e2-a043-12313d1f36c6" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation_6839834c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalizedComputerSoftwareNet" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareNet_306f9712-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_683dcad8-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareNet_306f9712-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalizedComputerSoftwareGross" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareGross_306ffb94-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareNet_306f9712-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareGross_306ffb94-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalizedComputerSoftwareAccumulatedAmortization" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareAccumulatedAmortization_30737fee-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareNet_306f9712-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareAccumulatedAmortization_30737fee-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/QuarterlyFinancialDataUnaudited" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/QuarterlyFinancialDataUnauditedQuarterlyFinancialDataUnauditedDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/QuarterlyFinancialDataUnauditedQuarterlyFinancialDataUnauditedTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleI" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleIDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleIParentCommercialPaperAndLongTermDebtMaturitiesOfCommercialPaperAndLongTermDebtDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleIScheduleICondensedBalanceSheetDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleIScheduleICondensedBalanchSheetParentheticalsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleIScheduleICondensedStatmentOfOperationsDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_38f2d2fa-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_38f2d2fa-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="unh-20121231.xsd#unh_LossOfParentCompany" xlink:label="loc_unh_LossOfParentCompany_bef29968-59d7-11e2-a043-12313d1f36c6" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_unh_LossOfParentCompany_bef29968-59d7-11e2-a043-12313d1f36c6" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_unh_LossOfParentCompany_bef29968-59d7-11e2-a043-12313d1f36c6" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InvestmentIncomeInterestAndDividend" xlink:label="loc_us-gaap_InvestmentIncomeInterestAndDividend_5b42c4d2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_InvestmentIncomeInterestAndDividend_5b42c4d2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5817da40-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_6e581cc0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_6e581cc0-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_5a4444fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_419b6f8e-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_InterestExpense_5a4444fc-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="-1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_unh_LossOfParentCompany_bef29968-59d7-11e2-a043-12313d1f36c6" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_584ce050-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_57f57f0e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_611bec6c-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_57f57f0e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_643da0a2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_38f2d2fa-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_643da0a2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleIScheduleIStatementOfCashFlowsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ScheduleIScheduleITables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/SegmentFinancialInformation" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/SegmentFinancialInformationDetails" xlink:type="extended">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RevenuesFromExternalCustomers" xlink:label="loc_us-gaap_RevenuesFromExternalCustomers_6bd670e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_RevenuesFromExternalCustomers_6bd670e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PremiumsEarnedNet" xlink:label="loc_us-gaap_PremiumsEarnedNet_6692970e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="1" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RevenuesFromExternalCustomers_6bd670e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_PremiumsEarnedNet_6692970e-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_6c311014-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RevenuesFromExternalCustomers_6bd670e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_SalesRevenueServicesNet_6c311014-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="loc_us-gaap_SalesRevenueGoodsNet_6c240414-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RevenuesFromExternalCustomers_6bd670e6-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_SalesRevenueGoodsNet_6c240414-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity" xlink:label="loc_us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity_6bd6b506-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="2" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity_6bd6b506-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InvestmentIncomeInterestAndDividend" xlink:label="loc_us-gaap_InvestmentIncomeInterestAndDividend_5b42c4d2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="locator"/>
<calculationArc order="3" weight="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_6bd78760-78f6-11e1-94fe-25ba39ebf1f4" xlink:to="loc_us-gaap_InvestmentIncomeInterestAndDividend_5b42c4d2-78f6-11e1-94fe-25ba39ebf1f4" xlink:type="arc"/>
</calculationLink>
<calculationLink xlink:role="http://www.uhc.com/role/SegmentFinancialInformationSegmentFinancialInformationNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/SegmentFinancialInformationSegmentFinancialInformationPolicies" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/SegmentFinancialInformationTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensation" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensationNarrativeDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensationOtherShareBasedCompensationDataDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensationRecognitionPolicies" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensationRestrictedShareActivityDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensationShareBasedCompensationPrincipalFairValueAssumptionsDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensationStockOptionAndSarActivityDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareBasedCompensationTables" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareholdersEquity" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareholdersEquityShareholdersEquityDetails" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareholdersEquityShareholdersEquityPolicies" xlink:type="extended"/>
<calculationLink xlink:role="http://www.uhc.com/role/ShareholdersEquityShareholdersEquityTables" xlink:type="extended"/>
</linkbase>


5 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/24/23  UnitedHealth Group Inc.           10-K       12/31/22  119:19M
 2/15/22  UnitedHealth Group Inc.           10-K       12/31/21  113:19M
 3/01/21  UnitedHealth Group Inc.           10-K       12/31/20  107:17M
 5/22/13  SEC                               UPLOAD10/06/17    1:34K  Unitedhealth Group Inc.
 3/21/13  SEC                               UPLOAD10/06/17    1:161K Unitedhealth Group Inc.
Top
Filing Submission 0000731766-13-000005   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Fri., Apr. 26, 6:37:44.2pm ET