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Unitedhealth Group Inc – ‘10-K’ for 12/31/11 – ‘EX-101.SCH’

On:  Wednesday, 2/8/12, at 7:46pm ET   ·   As of:  2/9/12   ·   For:  12/31/11   ·   Accession #:  731766-12-9   ·   File #:  1-10864

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

 2/09/12  Unitedhealth Group Inc            10-K       12/31/11   99:21M

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   1.44M 
 3: EX-21.1     Subsidiaries of the Company                         HTML    196K 
 4: EX-23.1     Consent of Independent Registered Public            HTML     32K 
                Accounting Firm                                                  
 5: EX-24.1     Power of Attorney                                   HTML     38K 
 2: EX-12.1     Computation of Ratio of Earnings to Fixed Charges   HTML     43K 
 6: EX-31.1     Certification Pursuant to Section 302 of the        HTML     46K 
                Sarbanes-Oxley Act 2002                                          
 7: EX-32.1     Certification Pursuant to Section 906 of the        HTML     35K 
                Sarbanes-Oxley Act 2002                                          
67: R1          Document and Entity Information                     HTML     59K 
54: R2          Condensed Consolidated Balance Sheets               HTML    157K 
65: R3          Consolidated Balance Sheets (Parenthetical)         HTML     66K 
70: R4          Condensed Consolidated Statements of Operations     HTML    122K 
89: R5          Condensed Consolidated Statements of Changes in     HTML    112K 
                Shareholders' Equity                                             
56: R6          Consolidated Statement of Changes in Shareholders   HTML     36K 
                equity (Parentheticals)                                          
64: R7          Condensed Consolidated Statements of Cash Flows     HTML    169K 
48: R8          Description of Business                             HTML     34K 
38: R9          Basis of Presentation                               HTML    112K 
90: R10         Investments                                         HTML    276K 
72: R11         Fair Value                                          HTML    305K 
71: R12         Property, Equipment and Capitalized Software        HTML     55K 
77: R13         Goodwill                                            HTML    123K 
78: R14         Medical Costs and Medical Costs Payable             HTML     62K 
75: R15         Commercial Paper and Long-Term Debt                 HTML    174K 
79: R16         Income Taxes                                        HTML    148K 
66: R17         Shareholders' Equity                                HTML     61K 
68: R18         Share-Based Compensation                            HTML     97K 
74: R19         Commitments and Contingencies                       HTML     66K 
99: R20         Segment Financial Information                       HTML    301K 
85: R21         Quarterly Financial Data (Unaudited)                HTML     76K 
60: R22         Schedule I                                          HTML    175K 
73: R23         Basis of Presentation (Policy)                      HTML    203K 
62: R24         Basis of Presentation Basis of Presentation         HTML     49K 
                (Tables)                                                         
29: R25         Investments (Tables)                                HTML    273K 
86: R26         Fair Value (Tables)                                 HTML    295K 
94: R27         Property, Equipment and Capitalized Software        HTML     52K 
                (Tables)                                                         
43: R28         Goodwill (Tables)                                   HTML    127K 
42: R29         Medical Costs and Medical Costs Payable Medical     HTML     59K 
                Costs And Medical Costs Payable (Tables)                         
46: R30         Commercial Paper and Long-Term Debt (Tables)        HTML    175K 
47: R31         Income Taxes Income Taxes (Tables)                  HTML    147K 
49: R32         Shareholders' Equity (Tables)                       HTML     39K 
21: R33         Share-Based Compensation (Tables)                   HTML     79K 
83: R34         Commitments and Contingencies Commitments and       HTML     42K 
                Contingencies (Tables)                                           
58: R35         Segment Financial Information (Tables)              HTML    289K 
61: R36         Quarterly Financial Data (Unaudited) Quarterly      HTML     74K 
                Financial Data (Tables)                                          
33: R37         Basis of Presentation Basis of Presentation         HTML     64K 
                (Details)                                                        
98: R38         Basis of Presentation Medicare Part D (Details)     HTML     35K 
14: R39         Basis of Presentation Useful lives for property,    HTML     35K 
                equipment and capitalized software (Details)                     
51: R40         Investments (Narrative) (Details)                   HTML     43K 
88: R41         Investments (Short-Term and Long-Term Investments)  HTML     89K 
                (Details)                                                        
31: R42         Investments (Fair Value of Mortgage-Backed          HTML     51K 
                Securities by Credit Rating Origination) (Details)               
41: R43         Investments (Amortized Cost and Fair Value of       HTML     77K 
                Available-for-Sale Debt Securities by Contractual                
                Maturity) (Details)                                              
45: R44         Investments (Amortized Cost and Fair Value of       HTML     63K 
                Held-To-Maturity Debt Securities by Contractual                  
                Maturity) (Details)                                              
55: R45         Investments (Fair Value of Available-For-Sale       HTML     64K 
                Investments with Gross Unrealized Losses by                      
                Investment Type and Length of Time That Individual               
                Securities Have Been in a Continuous Unrealized                  
                Loss Position) (Details)                                         
20: R46         Investments (Net Realized Gains) (Details)          HTML     52K 
37: R47         Fair Value (Narrative) (Details)                    HTML     49K 
16: R48         Fair Value (Financial Assets and Liabilities,       HTML     74K 
                Excluding AARP, Measured at Fair Value on a                      
                Recurring Basis) (Details)                                       
87: R49         Fair Value (Assets and Liabilities measured at      HTML     86K 
                fair value on a recurring basis) (Details)                       
30: R50         Fair Value (Summary of Fair Value and Carrying      HTML     74K 
                Value for Certain Financial Instruments for Which                
                it is Practicable to Estimate Fair Value)                        
                (Details)                                                        
84: R51         Fair Value (Reconciliation of Assets Measured at    HTML     56K 
                Fair Value on a Recurring Basis Using Level 3                    
                Inputs) (Details)                                                
34: R52         Property, Equipment and Capitalized Software        HTML     36K 
                Property, Equipment and Capitalized Software                     
                (Narrative) (Details)                                            
52: R53         Property, Equipment and Capitalized Software        HTML     60K 
                Property, Equipment and Capitalized Software table               
                (Details)                                                        
15: R54         Goodwill and Other Intangible Assets Numbers in     HTML     39K 
                narrative (Details)                                              
18: R55         Goodwill (Changes in the Carrying Amount of         HTML     67K 
                Goodwill by Reporting Segment) (Details)                         
44: R56         Goodwill and Other Intangible Assets Gross          HTML     44K 
                carrying value, accumulated amortization and net                 
                carrying value of ther intangible assets (Details)               
24: R57         Goodwill and Other Intangible Assets                HTML     41K 
                Weighted-average useful lives assigned to                        
                finite-lived intangible assets acquired in                       
                business combinations (Details)                                  
91: R58         Goodwill and Other Intangible Assets Amortization   HTML     42K 
                Expense relating to Intangible Assets (Details)                  
57: R59         Medical Costs and Medical Costs Payable Narrative   HTML     32K 
                (Details)                                                        
76: R60         Medical Costs and Medical Costs Payable Medical     HTML     58K 
                Costs And Medical Costs Payable (Details)                        
36: R61         Commercial Paper and Long-Term Debt (Narrative)     HTML     49K 
                (Details)                                                        
39: R62         Commercial Paper and Long-Term Debt (Commercial     HTML     79K 
                Paper and Long-Term Debt) (Details)                              
82: R63         Commercial Paper and Long-Term Debt Maturities of   HTML     49K 
                commercial paper and long-term debt (Details)                    
80: R64         Commercial Paper and Long-Term Debt (Summary of     HTML     42K 
                Effect of Changes in Fair Value of Fair Value                    
                Hedges) (Details)                                                
59: R65         Income Taxes Income Tax Narrative (Details)         HTML     46K 
81: R66         Income Taxes Components of the provision for        HTML     54K 
                income taxes (Details)                                           
35: R67         Income Taxes Reconciliation of the tax provision    HTML     76K 
                at the U.S. Federal Statutory Rate to the                        
                provision for income taxes (Details)                             
63: R68         Income Taxes Components of deferred income tax      HTML     98K 
                assets and liabilities (Details)                                 
93: R69         Income Taxes Reconciliation of the beginning and    HTML     50K 
                ending amount of unrecognized tax benefits                       
                (Details)                                                        
17: R70         Shareholders' Equity (Details)                      HTML     81K 
28: R71         Share-Based Compensation (Narrative) (Details)      HTML     82K 
53: R72         Share-Based Compensation (Stock Option and SAR      HTML     80K 
                Activity) (Details)                                              
23: R73         Share-Based Compensation (Share-Based Compensation  HTML     49K 
                Principal Fair Value Assumptions) (Details)                      
97: R74         Share-Based Compensation (Restricted Share          HTML     59K 
                Activity) (Details)                                              
32: R75         Commitments and Contingencies (Details)             HTML     51K 
25: R76         Commitments and Contingencies Future lease          HTML     52K 
                payments (Details)                                               
27: R77         Segment Financial Information (Narrative)           HTML     32K 
                (Details)                                                        
19: R78         Segment Financial Information (Details)             HTML    143K 
22: R79         Quarterly Financial Data (Unaudited) Quarterly      HTML     58K 
                Financial Data (Details)                                         
69: R80         Schedule I Schedule I Condensed Balance Sheet       HTML    154K 
                (Details)                                                        
26: R81         Schedule I Condensed Statements of Operations       HTML     79K 
                (Details)                                                        
92: R82         Schedule I Schedule I Condensed Statements of Cash  HTML    111K 
                Flows (Details)                                                  
50: R83         Schedule I Numbers in Narrative (Details)           HTML     33K 
95: XML         IDEA XML File -- Filing Summary                      XML    156K 
40: EXCEL       IDEA Workbook of Financial Reports (.xls)            XLS   3.65M 
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10: EX-101.CAL  XBRL Calculations -- unh-20111231_cal                XML    318K 
11: EX-101.DEF  XBRL Definitions -- unh-20111231_def                 XML   1.05M 
12: EX-101.LAB  XBRL Labels -- unh-20111231_lab                      XML   2.20M 
13: EX-101.PRE  XBRL Presentations -- unh-20111231_pre               XML   1.40M 
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96: ZIP         XBRL Zipped Folder -- 0000731766-12-000009-xbrl      Zip    397K 


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<link:roleType id="DescriptionOfBusinessDescriptionOfBusinessDetails" roleURI="http://www.uhc.com/role/DescriptionOfBusinessDescriptionOfBusinessDetails">
<link:definition> 2401402 - Disclosure - Description of Business Description of Business (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DescriptionOfBusinessDescriptionOfBusinessTables" roleURI="http://www.uhc.com/role/DescriptionOfBusinessDescriptionOfBusinessTables">
<link:definition> 2301301 - Disclosure - Description of Business Description of Business (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DocumentAndEntityInformation" roleURI="http://www.uhc.com/role/DocumentAndEntityInformation">
<link:definition> 0001000 - Document - Document and Entity Information </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValue" roleURI="http://www.uhc.com/role/FairValue">
<link:definition> 2105100 - Disclosure - Fair Value </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" roleURI="http://www.uhc.com/role/FairValueAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails">
<link:definition> 2405404 - Disclosure - Fair Value (Assets and Liabilities measured at fair value on a recurring basis) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueFinancialAssetsAndLiabilitiesExcludingAarpMeasuredAtFairValueOnRecurringBasisDetails" roleURI="http://www.uhc.com/role/FairValueFinancialAssetsAndLiabilitiesExcludingAarpMeasuredAtFairValueOnRecurringBasisDetails">
<link:definition> 2405403 - Disclosure - Fair Value (Financial Assets and Liabilities, Excluding AARP, Measured at Fair Value on a Recurring Basis) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueNarrativeDetails" roleURI="http://www.uhc.com/role/FairValueNarrativeDetails">
<link:definition> 2405402 - Disclosure - Fair Value (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueReconciliationOfAssetsMeasuredAtFairValueOnRecurringBasisUsingLevel3InputsDetails" roleURI="http://www.uhc.com/role/FairValueReconciliationOfAssetsMeasuredAtFairValueOnRecurringBasisUsingLevel3InputsDetails">
<link:definition> 2405406 - Disclosure - Fair Value (Reconciliation of Assets Measured at Fair Value on a Recurring Basis Using Level 3 Inputs) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueSummaryOfFairValueAndCarryingValueForCertainFinancialInstrumentsForWhichItIsPracticableToEstimateFairValueDetails" roleURI="http://www.uhc.com/role/FairValueSummaryOfFairValueAndCarryingValueForCertainFinancialInstrumentsForWhichItIsPracticableToEstimateFairValueDetails">
<link:definition> 2405405 - Disclosure - Fair Value (Summary of Fair Value and Carrying Value for Certain Financial Instruments for Which it is Practicable to Estimate Fair Value) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueTables" roleURI="http://www.uhc.com/role/FairValueTables">
<link:definition> 2305301 - Disclosure - Fair Value (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="Goodwill" roleURI="http://www.uhc.com/role/Goodwill">
<link:definition> 2107100 - Disclosure - Goodwill </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillAndOtherIntangibleAssetsAmortizationExpenseRelatingToIntangibleAssetsDetails" roleURI="http://www.uhc.com/role/GoodwillAndOtherIntangibleAssetsAmortizationExpenseRelatingToIntangibleAssetsDetails">
<link:definition> 2407406 - Disclosure - Goodwill and Other Intangible Assets Amortization Expense relating to Intangible Assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillAndOtherIntangibleAssetsGrossCarryingValueAccumulatedAmortizationAndNetCarryingValueOfTherIntangibleAssetsDetails" roleURI="http://www.uhc.com/role/GoodwillAndOtherIntangibleAssetsGrossCarryingValueAccumulatedAmortizationAndNetCarryingValueOfTherIntangibleAssetsDetails">
<link:definition> 2407404 - Disclosure - Goodwill and Other Intangible Assets Gross carrying value, accumulated amortization and net carrying value of ther intangible assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillAndOtherIntangibleAssetsNumbersInNarrativeDetails" roleURI="http://www.uhc.com/role/GoodwillAndOtherIntangibleAssetsNumbersInNarrativeDetails">
<link:definition> 2407402 - Disclosure - Goodwill and Other Intangible Assets Numbers in narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillAndOtherIntangibleAssetsWeightedAverageUsefulLivesAssignedToFiniteLivedIntangibleAssetsAcquiredInBusinessCombinationsDetails" roleURI="http://www.uhc.com/role/GoodwillAndOtherIntangibleAssetsWeightedAverageUsefulLivesAssignedToFiniteLivedIntangibleAssetsAcquiredInBusinessCombinationsDetails">
<link:definition> 2407405 - Disclosure - Goodwill and Other Intangible Assets Weighted-average useful lives assigned to finite-lived intangible assets acquired in business combinations (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillChangesInCarryingAmountOfGoodwillByReportingSegmentDetails" roleURI="http://www.uhc.com/role/GoodwillChangesInCarryingAmountOfGoodwillByReportingSegmentDetails">
<link:definition> 2407403 - Disclosure - Goodwill (Changes in the Carrying Amount of Goodwill by Reporting Segment) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillTables" roleURI="http://www.uhc.com/role/GoodwillTables">
<link:definition> 2307301 - Disclosure - Goodwill (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxes" roleURI="http://www.uhc.com/role/IncomeTaxes">
<link:definition> 2110100 - Disclosure - Income Taxes </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesComponentsOfDeferredIncomeTaxAssetsAndLiabilitiesDetails" roleURI="http://www.uhc.com/role/IncomeTaxesComponentsOfDeferredIncomeTaxAssetsAndLiabilitiesDetails">
<link:definition> 2410405 - Disclosure - Income Taxes Components of deferred income tax assets and liabilities (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesComponentsOfProvisionForIncomeTaxesDetails" roleURI="http://www.uhc.com/role/IncomeTaxesComponentsOfProvisionForIncomeTaxesDetails">
<link:definition> 2410403 - Disclosure - Income Taxes Components of the provision for income taxes (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesIncomeTaxNarrativeDetails" roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxNarrativeDetails">
<link:definition> 2410402 - Disclosure - Income Taxes Income Tax Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesIncomeTaxesTables" roleURI="http://www.uhc.com/role/IncomeTaxesIncomeTaxesTables">
<link:definition> 2310301 - Disclosure - Income Taxes Income Taxes (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesReconciliationOfBeginningAndEndingAmountOfUnrecognizedTaxBenefitsDetails" roleURI="http://www.uhc.com/role/IncomeTaxesReconciliationOfBeginningAndEndingAmountOfUnrecognizedTaxBenefitsDetails">
<link:definition> 2410406 - Disclosure - Income Taxes Reconciliation of the beginning and ending amount of unrecognized tax benefits (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesReconciliationOfTaxProvisionAtUSFederalStatutoryRateToProvisionForIncomeTaxesDetails" roleURI="http://www.uhc.com/role/IncomeTaxesReconciliationOfTaxProvisionAtUSFederalStatutoryRateToProvisionForIncomeTaxesDetails">
<link:definition> 2410404 - Disclosure - Income Taxes Reconciliation of the tax provision at the U.S. Federal Statutory Rate to the provision for income taxes (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="Investments" roleURI="http://www.uhc.com/role/Investments">
<link:definition> 2104100 - Disclosure - Investments </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsAmortizedCostAndFairValueOfAvailableForSaleDebtSecuritiesByContractualMaturityDetails" roleURI="http://www.uhc.com/role/InvestmentsAmortizedCostAndFairValueOfAvailableForSaleDebtSecuritiesByContractualMaturityDetails">
<link:definition> 2404405 - Disclosure - Investments (Amortized Cost and Fair Value of Available-for-Sale Debt Securities by Contractual Maturity) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsAmortizedCostAndFairValueOfHeldToMaturityDebtSecuritiesByContractualMaturityDetails" roleURI="http://www.uhc.com/role/InvestmentsAmortizedCostAndFairValueOfHeldToMaturityDebtSecuritiesByContractualMaturityDetails">
<link:definition> 2404406 - Disclosure - Investments (Amortized Cost and Fair Value of Held-To-Maturity Debt Securities by Contractual Maturity) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsFairValueOfAvailableForSaleInvestmentsWithGrossUnrealizedLossesByInvestmentTypeAndLengthOfTimeThatIndividualSecuritiesHaveBeenInContinuousUnrealizedLossPositionDetails" roleURI="http://www.uhc.com/role/InvestmentsFairValueOfAvailableForSaleInvestmentsWithGrossUnrealizedLossesByInvestmentTypeAndLengthOfTimeThatIndividualSecuritiesHaveBeenInContinuousUnrealizedLossPositionDetails">
<link:definition> 2404407 - Disclosure - Investments (Fair Value of Available-For-Sale Investments with Gross Unrealized Losses by Investment Type and Length of Time That Individual Securities Have Been in a Continuous Unrealized Loss Position) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsFairValueOfMortgageBackedSecuritiesByCreditRatingOriginationDetails" roleURI="http://www.uhc.com/role/InvestmentsFairValueOfMortgageBackedSecuritiesByCreditRatingOriginationDetails">
<link:definition> 2404404 - Disclosure - Investments (Fair Value of Mortgage-Backed Securities by Credit Rating Origination) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsNarrativeDetails" roleURI="http://www.uhc.com/role/InvestmentsNarrativeDetails">
<link:definition> 2404402 - Disclosure - Investments (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsNetRealizedGainsDetails" roleURI="http://www.uhc.com/role/InvestmentsNetRealizedGainsDetails">
<link:definition> 2404408 - Disclosure - Investments (Net Realized Gains) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsShortTermAndLongTermInvestmentsDetails" roleURI="http://www.uhc.com/role/InvestmentsShortTermAndLongTermInvestmentsDetails">
<link:definition> 2404403 - Disclosure - Investments (Short-Term and Long-Term Investments) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="InvestmentsTables" roleURI="http://www.uhc.com/role/InvestmentsTables">
<link:definition> 2304301 - Disclosure - Investments (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="MedicalCostsAndMedicalCostsPayable" roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayable">
<link:definition> 2108100 - Disclosure - Medical Costs and Medical Costs Payable </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="MedicalCostsAndMedicalCostsPayableMedicalCostsAndMedicalCostsPayableDetails" roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableMedicalCostsAndMedicalCostsPayableDetails">
<link:definition> 2408403 - Disclosure - Medical Costs and Medical Costs Payable Medical Costs And Medical Costs Payable (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="MedicalCostsAndMedicalCostsPayableMedicalCostsAndMedicalCostsPayableTables" roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableMedicalCostsAndMedicalCostsPayableTables">
<link:definition> 2308301 - Disclosure - Medical Costs and Medical Costs Payable Medical Costs And Medical Costs Payable (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="MedicalCostsAndMedicalCostsPayableNarrativeDetails" roleURI="http://www.uhc.com/role/MedicalCostsAndMedicalCostsPayableNarrativeDetails">
<link:definition> 2408402 - Disclosure - Medical Costs and Medical Costs Payable Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyEquipmentAndCapitalizedSoftware" roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftware">
<link:definition> 2106100 - Disclosure - Property, Equipment and Capitalized Software </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareNarrativeDetails" roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareNarrativeDetails">
<link:definition> 2406402 - Disclosure - Property, Equipment and Capitalized Software Property, Equipment and Capitalized Software (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTableDetails" roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwarePropertyEquipmentAndCapitalizedSoftwareTableDetails">
<link:definition> 2406403 - Disclosure - Property, Equipment and Capitalized Software Property, Equipment and Capitalized Software table (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PropertyEquipmentAndCapitalizedSoftwareTables" roleURI="http://www.uhc.com/role/PropertyEquipmentAndCapitalizedSoftwareTables">
<link:definition> 2306301 - Disclosure - Property, Equipment and Capitalized Software (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="QuarterlyFinancialDataUnaudited" roleURI="http://www.uhc.com/role/QuarterlyFinancialDataUnaudited">
<link:definition> 2116100 - Disclosure - Quarterly Financial Data (Unaudited) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="QuarterlyFinancialDataUnauditedQuarterlyFinancialDataDetails" roleURI="http://www.uhc.com/role/QuarterlyFinancialDataUnauditedQuarterlyFinancialDataDetails">
<link:definition> 2416402 - Disclosure - Quarterly Financial Data (Unaudited) Quarterly Financial Data (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="QuarterlyFinancialDataUnauditedQuarterlyFinancialDataTables" roleURI="http://www.uhc.com/role/QuarterlyFinancialDataUnauditedQuarterlyFinancialDataTables">
<link:definition> 2316301 - Disclosure - Quarterly Financial Data (Unaudited) Quarterly Financial Data (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ScheduleI" roleURI="http://www.uhc.com/role/ScheduleI">
<link:definition> 2117100 - Disclosure - Schedule I </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ScheduleICondensedStatementsOfOperationsDetails" roleURI="http://www.uhc.com/role/ScheduleICondensedStatementsOfOperationsDetails">
<link:definition> 2417402 - Disclosure - Schedule I Condensed Statements of Operations (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ScheduleINumbersInNarrativeDetails" roleURI="http://www.uhc.com/role/ScheduleINumbersInNarrativeDetails">
<link:definition> 2417404 - Disclosure - Schedule I Numbers in Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ScheduleIScheduleICondensedBalanceSheetDetails" roleURI="http://www.uhc.com/role/ScheduleIScheduleICondensedBalanceSheetDetails">
<link:definition> 2417401 - Disclosure - Schedule I Schedule I Condensed Balance Sheet (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ScheduleIScheduleICondensedStatementsOfCashFlowsDetails" roleURI="http://www.uhc.com/role/ScheduleIScheduleICondensedStatementsOfCashFlowsDetails">
<link:definition> 2417403 - Disclosure - Schedule I Schedule I Condensed Statements of Cash Flows (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentFinancialInformation" roleURI="http://www.uhc.com/role/SegmentFinancialInformation">
<link:definition> 2115100 - Disclosure - Segment Financial Information </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentFinancialInformationDetails" roleURI="http://www.uhc.com/role/SegmentFinancialInformationDetails">
<link:definition> 2415403 - Disclosure - Segment Financial Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentFinancialInformationNarrativeDetails" roleURI="http://www.uhc.com/role/SegmentFinancialInformationNarrativeDetails">
<link:definition> 2415402 - Disclosure - Segment Financial Information (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SegmentFinancialInformationTables" roleURI="http://www.uhc.com/role/SegmentFinancialInformationTables">
<link:definition> 2315301 - Disclosure - Segment Financial Information (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ShareBasedCompensation" roleURI="http://www.uhc.com/role/ShareBasedCompensation">
<link:definition> 2112100 - Disclosure - Share-Based Compensation </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ShareBasedCompensationNarrativeDetails" roleURI="http://www.uhc.com/role/ShareBasedCompensationNarrativeDetails">
<link:definition> 2412402 - Disclosure - Share-Based Compensation (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<xsd:element id="unh_MortgageBackedSecuritiesByCreditRatingAndOriginationTextBlock" name="MortgageBackedSecuritiesByCreditRatingAndOriginationTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_NumberOfBanksThatCompriseRevolvingBankCreditFacility" name="NumberOfBanksThatCompriseRevolvingBankCreditFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_NumberOfDaysNoticeRequiredToCancelHealthInsuranceContract" name="NumberOfDaysNoticeRequiredToCancelHealthInsuranceContract" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_NumberOfReportableSegments" name="NumberOfReportableSegments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_NumberOfYearsOfRevolvingBankCredit" name="NumberOfYearsOfRevolvingBankCredit" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_NumbersInNarrativeAbstract" name="NumbersInNarrativeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_OnePointNinePercentageOfSeniorUnsecuredNotesDueNovemberTwoThousandAndSixteenthMember" name="OnePointNinePercentageOfSeniorUnsecuredNotesDueNovemberTwoThousandAndSixteenthMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_OptumhealthMember" name="OptumhealthMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_OptuminsightMember" name="OptuminsightMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_OptumrxMember" name="OptumrxMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_OriginationIn2007Member" name="OriginationIn2007Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_OtherPolicyLiabilitiesPolicyTextBlock" name="OtherPolicyLiabilitiesPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_PercentageOfLoansInDefault" name="PercentageOfLoansInDefault" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_PolicyAcquisitionCostsPolicyTextBlock" name="PolicyAcquisitionCostsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_PreTwoThousandFiveMember" name="PreTwoThousandFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_PreferredStockAndOtherItemsWithNoActiveMarketsMember" name="PreferredStockAndOtherItemsWithNoActiveMarketsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet" name="PropertyPlantAndEquipmentExcludingCapitalizedComputerSoftwareNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="unh_ProvisionForIncomeTaxesAxis" name="ProvisionForIncomeTaxesAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_ProvisionForIncomeTaxesDomain" name="ProvisionForIncomeTaxesDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_QuarterlyAmountSinceJune2010Member" name="QuarterlyAmountSinceJune2010Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_QuarterlyCashDividendRatePerShare" name="QuarterlyCashDividendRatePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_RateStabilizationFund" name="RateStabilizationFund" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_RecentAccountingStandardsPolicyTextBlock" name="RecentAccountingStandardsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_ReinsuranceReceivableCurrentMember" name="ReinsuranceReceivableCurrentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_ReinsuranceReceivalbeNonCurrentMember" name="ReinsuranceReceivalbeNonCurrentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_RevolvingCreditFacilityMember" name="RevolvingCreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_RiskShareMember" name="RiskShareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_ScheduleICondensedStatementsOfCashFlowsAbstract" name="ScheduleICondensedStatementsOfCashFlowsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_ScheduleOfDividendsPaidTableTextBlock" name="ScheduleOfDividendsPaidTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_ScheduleOfOtherCurrentReceivablesAndOtherPolicyLiabilitiesAssociatedWithMedicarePartDProgramTableTextBlock" name="ScheduleOfOtherCurrentReceivablesAndOtherPolicyLiabilitiesAssociatedWithMedicarePartDProgramTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SecuritiesByOriginationAxis" name="SecuritiesByOriginationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SecuritiesByOriginationDomain" name="SecuritiesByOriginationDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SecuritiesCollateralizedBySubPrimeHomeEquityLinesOfCreditMember" name="SecuritiesCollateralizedBySubPrimeHomeEquityLinesOfCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SegmentFinancialInformationAbstract" name="SegmentFinancialInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SeniorUnsecuredFloatingRateNotesDueFebruary2011Member" name="SeniorUnsecuredFloatingRateNotesDueFebruary2011Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsExercisableNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsExercisesInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsExercisesInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsForfeituresInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsForfeituresInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsGrantsInPeriodNetOfForfeitures" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsGrantsInPeriodNetOfForfeitures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsOutstandingNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsOutstandingNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsVestedAndExpectedToVestOutstandingNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndSarsVestedAndExpectedToVestOutstandingNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="unh_SixPercentSeniorUnsecuredNotesDueJuneTwoThousandSeventeenMember" name="SixPercentSeniorUnsecuredNotesDueJuneTwoThousandSeventeenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SixPointFivePercentSeniorUnsecuredNotesDueJuneTwoThousandThirtySevenMember" name="SixPointFivePercentSeniorUnsecuredNotesDueJuneTwoThousandThirtySevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SixPointNinePercentSeniorUnsecuredNotesDueFebruaryTwoThousandThirtyEightMember" name="SixPointNinePercentSeniorUnsecuredNotesDueFebruaryTwoThousandThirtyEightMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SixPointSixPercentSeniorUnsecuredNotesDueNovemberTwoThousandThirtySevenMember" name="SixPointSixPercentSeniorUnsecuredNotesDueNovemberTwoThousandThirtySevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SixPointZeroPercentSeniorUnsecuredNotesDueFebruaryTwoThousandFortyOneMember" name="SixPointZeroPercentSeniorUnsecuredNotesDueFebruaryTwoThousandFortyOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SixPointZeroPercentSeniorUnsecuredNotesDueNovember2017Member" name="SixPointZeroPercentSeniorUnsecuredNotesDueNovember2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_SixPointZeroSeniorUnsecuredNotesDueFebruaryTwoThousandEighteenMember" name="SixPointZeroSeniorUnsecuredNotesDueFebruaryTwoThousandEighteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_SubsequentEventDividendDeclaredAmountPerShare" name="SubsequentEventDividendDeclaredAmountPerShare" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_SuretyBondsOutstanding" name="SuretyBondsOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="unh_TerminationOfInterestRateSwapFairValueHedgesMember" name="TerminationOfInterestRateSwapFairValueHedgesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_ThreePointFourPercentageOfSeniorUnsecuredNotesDueNovemberTwoThousandTwentyOneMember" name="ThreePointFourPercentageOfSeniorUnsecuredNotesDueNovemberTwoThousandTwentyOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_ThreePointNinePercentSeniorUnsecuredNotesDueOctoberTwoThousandTwentyMember" name="ThreePointNinePercentSeniorUnsecuredNotesDueOctoberTwoThousandTwentyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_TotalNumberOfSecurityPositions" name="TotalNumberOfSecurityPositions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
<xsd:element id="unh_TotalNumberOfViolationsAllegedByCdi" name="TotalNumberOfViolationsAllegedByCdi" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="unh_TotalOptumMember" name="TotalOptumMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_TrademarksAndTechnologyMember" name="TrademarksAndTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_TwoThousandElevenMember" name="TwoThousandElevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_TwoThousandFiveMember" name="TwoThousandFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_TwoThousandSixMember" name="TwoThousandSixMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_TwoThousandTenMember" name="TwoThousandTenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_UndrawnLettersOfCredit" name="UndrawnLettersOfCredit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="unh_UnitedhealthcareMember" name="UnitedhealthcareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_UsefulLivesForPropertyEquipmentAndCapitalizedSoftwareAbstract" name="UsefulLivesForPropertyEquipmentAndCapitalizedSoftwareAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_UsefulLivesForPropertyEquipmentAndCapitalizedSoftwareTableTextBlock" name="UsefulLivesForPropertyEquipmentAndCapitalizedSoftwareTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="unh_UsefulLivesTable" name="UsefulLivesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element id="unh_VarianceOfRiskShare" name="VarianceOfRiskShare" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="unh_ZeroCouponSeniorUnsecuredNotesDueNovemberTwoThousandTwentyTwoMember" name="ZeroCouponSeniorUnsecuredNotesDueNovemberTwoThousandTwentyTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
</xsd:schema>


2 Subsequent Filings that Reference this Filing

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

 6/14/12  SEC                               UPLOAD10/06/17    1:34K  Unitedhealth Group Inc.
 4/25/12  SEC                               UPLOAD10/06/17    1:60K  Unitedhealth Group Inc.
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