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        <ExplanationTxt>BOSTON MEDICAL CENTER-SOUTH (BMC-SOUTH) WAS RECOGNIZED AS A HEALTHCARE ORGANIZATION DESCRIBED IN SECTION 170(B)(1)(A)(III) OF THE INTERNAL REVENUE CODE. DURING THE FISCAL YEAR ENDED SEPTEMBER 30, 2024, THE ORGANIZATION DID NOT OPERATE A FACILITY REQUIRED TO BE LICENSED AS A HOSPITAL, THEREFORE SCHEDULE H HAS NOT BEEN PREPARED.</ExplanationTxt>
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        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>BOSTON MEDICAL CENTER-SOUTH IS INCLUDED IN THE CONSOLIDATED FINANCIAL STATEMENTS OF BMC HEALTH SYSTEM (BMCHS). THESE STATEMENTS INCLUDE THE FOLLOWING LANGUAGE REGARDING LIABILITY FOR UNCERTAIN TAX POSITIONS WITHIN THE INCOME TAXES FOOTNOTE. BMCHS RECOGNIZES INCOME TAX POSITIONS WHEN IT IS MORE LIKELY THAN NOT THAT THE POSITION WILL BE SUSTAINABLE BASED ON THE MERITS OF THE POSITION. MANAGEMENT HAS CONCLUDED THAT THERE ARE NO MATERIAL UNCERTAIN TAX POSITIONS THAT NEED TO BE RECORDED AS OF SEPTEMBER 30, 2024 AND 2023. BMCHS ANNUALLY ASSESSES WHETHER IT MUST RECOGNIZE UBIT EXPENSE. THE AMOUNTS RECOGNIZED AS UBIT EXPENSE WERE NOT MATERIAL TO BMCHS'S CONSOLIDATED OPERATIONS OR CHANGES IN NET ASSETS FOR THE YEARS ENDED SEPTEMBER 30, 2024 AND 2023.</ExplanationTxt>
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        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>ALASTAIR BELL DAVID BECK JESSE SOUWEINE BUSINESS RELATIONSHIP - ALASTAIR BELL, DAVID BECK, AND JESSE SOUWEINE ARE ALL EMPLOYEES OF BOSTON MEDICAL CENTER.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S SOLE CORPORATE MEMBER IS BMC HEALTH SYSTEM, INC.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING DECISIONS ARE RESERVED TO THE ORGANIZATION'S SOLE MEMBER: - APPROVAL OF THE ANNUAL CAPITAL AND OPERATING BUDGETS OR ANY MATERIAL AMENDMENT TO, OR VARIATION FROM, THOSE BUDGETS; - APPOINTMENT OR REMOVAL OF THE PRESIDENT OF THE CORPORATION; - AUTHORIZATION OF ANY MERGER OR CONSOLIDATION WITH, OR ANY ACQUISITION OF, ANOTHER CORPORATION BY THE CORPORATION; - AUTHORIZATION OF THE SALE, LEASE, MORTGAGE, PLEDGE OR OTHER DISPOSITION OF ANY ASSETS OF THE CORPORATION, OR AUTHORIZATION OF ANY INDEBTEDNESS OF THE CORPORATION, IN EXCESS OF AMOUNTS SET BY THE MEMBER OR THE BOARD FROM TIME TO TIME; - DETERMINATION OF THE THRESHOLD AMOUNT OF INDEBTEDNESS OF THE CORPORATION, OVER WHICH AMOUNT AUTHORIZATION IS REQUIRED PURSUANT TO SECTION 2.03(D); AND - APPROVAL OF THE FILING OF ANY VOLUNTARY BANKRUPTCY.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS PREPARED BY THE ORGANIZATION'S AUDIT/TAX FIRM AND IS THEN REVIEWED BY MANAGEMENT. IT IS PROVIDED TO THE AUDIT AND COMPLIANCE COMMITTEE OF THE HEALTH SYSTEM FOR REVIEW AND COMMENT, AND THE FINAL 990 IS PROVIDED TO ALL MEMBERS OF THE ORGANIZATION'S GOVERNING BODY PRIOR TO FILING.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICT OF INTEREST QUESTIONNAIRES ARE DISTRIBUTED BY BMC HEALTH SYSTEM, INC.'S, AN AFFILIATED ORGANIZATION, CORPORATE COMPLIANCE DEPARTMENT. THE CHIEF COMPLIANCE OFFICER OF BMC HEALTH SYSTEM, INC. OR THE CHIEF COMPLIANCE OFFICER'S DESIGNEE QUERIES TRUSTEES, OFFICERS AND DIRECTORS ON AT LEAST AN ANNUAL BASIS REGARDING RELATIONSHIPS THAT MAY CREATE POTENTIAL CONFLICTS OF INTEREST. THE CHIEF COMPLIANCE OFFICER OR THE CHIEF COMPLIANCE OFFICER'S DESIGNEE REVIEWS ALL DISCLOSURES AND DETERMINES WHETHER THERE ARE ACTUAL OR POTENTIAL CONFLICTS OF INTEREST. THE CHIEF COMPLIANCE OFFICER OR THE CHIEF COMPLIANCE OFFICER'S DESIGNEE INFORMS THE CHIEF LEGAL COUNSEL OF ANY ACTUAL OR POTENTIAL CONFLICTS OF INTEREST. THE CHIEF LEGAL COUNSEL ADVISES THE BOARD OF TRUSTEES AND OFFICERS OF THE CORPORATION ACCORDINGLY. FORM 990, PART VI, LINE 14 THE ORGANIZATION HAS RECORD RETENTION REQUIREMENTS INCLUDED WITHIN ITS CONTRACTS AND FOLLOWS THE RECORD RETENTION POLICY OF BOSTON MEDICAL CENTER. FORM 990, SECTION A, LINES 15A AND 15B: IN ACCORDANCE WITH INSTRUCTIONS, LINES 15A AND 15B ARE ANSWERED NO. THERE IS NO CALENDAR YEAR THAT ENDS WITH OR WITHIN THE INITIAL SHORT YEAR. THEREFORE, NO COMPENSATION IS REPORTED IN PART VII.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>BOSTON MEDICAL CENTER-SOUTH CORPORATION DOES NOT MAKE ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS PUBLICLY AVAILABLE. HOWEVER, THE ARTICLES OF ORGANIZATION ARE AVAILABLE ON THE SECRETARY OF THE COMMONWEALTH'S WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VII, SECTION A:</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION FROM RELATED ORGANIZATIONS IS NOT REPORTED IN PART VII FOR THIS INITIAL SHORT YEAR IN ACCORDANCE WITH INSTRUCTIONS. THERE IS NO CALENDAR YEAR THAT ENDS WITH OR WITHIN THE TAX YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>BMC HEALTH SYSTEM INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>ONE BOSTON MEDICAL CENTER PL</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02118</ZIPCd>
        </USAddress>
        <EIN>463556853</EIN>
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        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>12 B-II</PublicCharityStatusTxt>
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        <ControlledOrganizationInd>1</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
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        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>ONE BOSTON MEDICAL CENTER PL</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02118</ZIPCd>
        </USAddress>
        <EIN>043414914</EIN>
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        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
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          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02129</ZIPCd>
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        <EIN>043373331</EIN>
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        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>12 A-I</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
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        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
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      <IdRelatedTaxExemptOrgGrp>
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          <AddressLine1Txt>ONE BOSTON MEDICAL CENTER PL</AddressLine1Txt>
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        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>BMCHS</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>1</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>1</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>