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  <xs:element id="hum_GovernmentAndHealthPlanMemberSubsidiesAmount" abstract="false" name="GovernmentAndHealthPlanMemberSubsidiesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hum_DepreciationAndAmortizationClassifiedAsBenefitExpense" abstract="false" name="DepreciationAndAmortizationClassifiedAsBenefitExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hum_CorporateAndEliminationsMember" abstract="true" name="CorporateAndEliminationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="hum_ExternalRevenuesMember" abstract="true" name="ExternalRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
