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        <OtherCostOrOtherBasisAmt>64173</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>5204</DepreciationAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>6266111</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>441231</NetUnrealizedGainsInvstAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X : FIN48 Footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>The Society follows the accounting standard on accounting for uncertainty in income taxes, which addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the financial statements. Under this guidance, the Society may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. The guidance on accounting for uncertainty in income taxes also addresses de-recognition, classification, interest and penalties on income taxes, and accounting in interim periods.Management evaluated the Society tax positions and concluded that the Society had taken no uncertain tax positions that require adjustment to the financial statements to comply with the provisions of this guidance. Currently, the tax years open and subject to examination by the Internal Revenue Service are 2016, 2017, and 2018 tax years.</ExplanationTxt>
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      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
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      <InitialContractExceptionInd>false</InitialContractExceptionInd>
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        <PersonNm>Jaime Abreu</PersonNm>
        <TitleTxt>Executive VP</TitleTxt>
        <BaseCompensationFilingOrgAmt>166142</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>3000</BonusFilingOrganizationAmount>
        <DeferredCompensationFlngOrgAmt>6646</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>14520</NontaxableBenefitsFilingOrgAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>John Barnes</PersonNm>
        <TitleTxt>CEO</TitleTxt>
        <BaseCompensationFilingOrgAmt>340000</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>25000</BonusFilingOrganizationAmount>
        <DeferredCompensationFlngOrgAmt>4333</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>13483</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>382816</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Joori Jeon</PersonNm>
        <TitleTxt>COO</TitleTxt>
        <BaseCompensationFilingOrgAmt>206557</BaseCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>3833</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>7089</NontaxableBenefitsFilingOrgAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 7: Non-Fixed payments not listed above</FormAndLineReferenceDesc>
        <ExplanationTxt>The salaried officers of the Organization can earn an annual performance bonus based on predetermined metrics established by the board of directors.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d: Other Program Services Description</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER PROGRAM SERVICES 4: Research grants: the society's grant program provides grants for research related to heart failure and fellow training. There were no grants paid in the 2019 year. OTHER PROGRAM SERVICES 5: Community Education Program: The Program offers live presentations throughout the US as well as online education via webinars to heart failure patients, caregivers and the general public. HFSA has prepared a series of standardized educational presentations designed to help patients learn to live successfully with heart failure. The presentations are provided by heart failure specialists. They are developed to be informative and to provide practical information on a specific topic that is useful to both patients and their families. Each presentation offers time to ask questions of the expert speaker. HFSA partners with patient-based organizations to bring these presentations to the local communities. OTHER PROGRAM SERVICES 6: OTHER PROGRAM SERVICES 7: Review Course:incorporates results of new research studies, increased focus on practical management recommendations, addresses issues encountered in practice, adds case studies and provides breakout sessions in areas of special interest. Intended for cardiologists, internists, nurses, pharmacists, pharmacologists, and other health professionals with a special interest in heart failure. this program will use evidence-based presentation including guideline based practice recommendations. Breakout and case study sessions focus on practical management issues in heart failure. Approximately 130 persons attended in 2019. OTHER PROGRAM SERVICES 8: International Initiative: Work included the Trilateral International Consensus Conference, numerous joint annual meeting sessions with other international cardiology societies, establishment of an international membership at HFSA, and collaboration meetings at the HFSA Annual Scientific Meeting with numerous leaders of international cardiology societies.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6: Explanation of Classes of Members or Shareholder</FormAndLineReferenceDesc>
        <ExplanationTxt>members consist of professionals connected with the field of cardiovascular disease or failure.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b: Form 990 Review Process</FormAndLineReferenceDesc>
        <ExplanationTxt>the CEO and coo reviews the 990 and distributes copies to the audit committee for approval prior to filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c: Explanation of Monitoring and Enforcement of Conflicts</FormAndLineReferenceDesc>
        <ExplanationTxt>all council members disclose potential conflicts on an annual basis. this information is reviewed and monitored by the cme director.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a: Compensation Review &amp; Approval Process - CEO, Top Management</FormAndLineReferenceDesc>
        <ExplanationTxt>the process for determining the compensation of the ceo involves review and approval by the executive committee, comparability data (guidestar compensation and benefits study), and contemporaneous substantiation of the approval via amendment of the employment agreement. the performance bonus is determined based on evaluations from the leaders of the society that interact with the ceo.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b: Compensation Review and Approval Process for Officers and Key Employees</FormAndLineReferenceDesc>
        <ExplanationTxt>Other officer salaries are established by the ceo and president, and are commensurate with market value and experience.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19: Other Organization Documents Publicly Available</FormAndLineReferenceDesc>
        <ExplanationTxt>copies of the Form 990, and other documents are made available upon request.</ExplanationTxt>
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