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        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2 FIN 48 (ASC 740) footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>Complex Care Medical Services's financial information is included in the consolidated audited financial statements of Children's Health System of Texas, a related organization. Children's Health System of Texas's FIN 48 (ASC 740) footnote for the year ended December 31, 2019, reads as follows: "The authoritative guidance in ASC 740 Income Taxes, creates a single model to address uncertainty in tax positions and clarifies the accounting for income taxes by prescribing the minimum recognition threshold a tax position is required to meet before being recognized in the financial statements. Management annually reviews its tax positions and has determined that there are no material uncertain tax positions that require recognition in the accompanying consolidated balance sheets. The statute of limitations remains open for tax years 2016 through 2019 in Children's Health main taxing jurisdictions."</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3 Arrangement used to establish the top management official's compensation</FormAndLineReferenceDesc>
        <ExplanationTxt>CHILDREN'S HEALTH SYSTEM OF TEXAS (EIN 75-2062019) IS THE SOLE MEMBER AND COMMON PAYING AGENT FOR COMPLEX CARE MEDICAL SERVICES CORPORATION (CCMSC). THEREFORE, CCMSC'S TOP MANAGEMENT OFFICIAL, THE PRESIDENT, IS COMPENSATED BY CHILDREN'S HEALTH SYSTEM OF TEXAS (CHST). The CHST process for determining executive compensation is as follows: The Human Resources Committee (Committee) of the CHST Board is responsible for setting the compensation for executives. The Committee is comprised of independent, non-employee directors. A written compensation philosophy has been developed by the Human Resources Committee for timeliness and appropriateness and defines the desired peer groups for compensation surveys. The HR Committee engages the services of an independent compensation consultant for executive compensation. COMPENSATION PROGRAM COMPONENTS: The elements of total compensation provided to CHST executives include: - Cash compensation (i.e., base salary, short-term and long-term incentive compensation, and/or other cash compensation), determined in consideration of competitive market practices, organizational and individual performance, recruitment and retention considerations, and other relevant factors. - Standard benefits, assisting in each executive's medical, dental, disability, life insurance, time off, and retirement needs, reflective of the employment status (i.e., full or part time) of the executive. - Supplemental benefits, including supplemental insurance, retirement benefits, and/or other supplemental benefits determined by the Committee to be appropriate and reasonable in relation to marketplace practices. Compensation and benefits decisions are made in consideration of each executive's position, responsibilities, skills, effort, and performance, in relation to documented practices within the appropriate comparator group(s). PEER GROUP: The Committee has defined its primary peer group for executives as not-for-profit health care organizations similar in size, structure, and complexity. This group will include leading pediatric health systems as well as integrated health systems and academic medical centers. - Data will be compiled in a manner consistent with the IRS Intermediate Sanctions rules of federal tax law, to reflect what is "ordinarily paid to like executives by like enterprises under like circumstances." - In certain circumstances, market data from additional comparator groups (e.g., research institutions, insurance industry, and general industry companies) may also be referenced. - The specific nature of the role at CHST will be considered when adding comparator groups outside of the primary peer group, and the Committee will discuss and agree on the appropriateness of adding comparator groups whenever the specific nature of the CHST role requires additional comparator groups to be used.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4a Severance or change-of-control payment</FormAndLineReferenceDesc>
        <ExplanationTxt>Tammie Sibley - $472,500.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4b Supplemental nonqualified retirement plan</FormAndLineReferenceDesc>
        <ExplanationTxt>Savings Restoration Plan: Ray Tsai participated in the Savings Restoration Plan; however, no payments were received in 2019. Executive Defined Contribution Retirement Plan (EDCRP): Employees who received taxable income from the EDCRP include: Ray Tsai - $72,007 and Tammie Sibley - $119,039. Employees who participated in and have contributions to the EDCRP include: Ray Tsai - $123,652 and Tammie Sibley - $44,538.</ExplanationTxt>
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    </IRS990ScheduleJ>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part V, Line 2a</FormAndLineReferenceDesc>
        <ExplanationTxt>CHILDREN'S HEALTH SYSTEM OF TEXAS (CHST) EIN 75-2062019 IS THE COMMON PAYING AGENT FOR COMPLEX CARE MEDICAL SERVICES CORPORATION (CCMSC) THEREFORE, ALL APPLICABLE IRS TAX COMPLIANCE FILINGS ARE REPORTED BY CHST ON BEHALF OF CCMSC. CCMSC HAS APPROXIMATELY 28 EMPLOYEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a PROCESS TO ESTABLISH COMPENSATION OF TOP MANAGEMENT OFFICIAL</FormAndLineReferenceDesc>
        <ExplanationTxt>CHILDREN'S HEALTH SYSTEM OF TEXAS (EIN 75-2062019) IS THE SOLE MEMBER AND COMMON PAYING AGENT FOR COMPLEX CARE MEDICAL SERVICES CORPORATION (CCMSC). THEREFORE, CCMSC'S TOP MANAGEMENT OFFICIAL IS EMPLOYED AND COMPENSATED BY CHILDREN'S HEALTH SYSTEM OF TEXAS (CHST). Compensation setting takes place at the related entity Children's Health System of Texas (CHST).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 8b Committees</FormAndLineReferenceDesc>
        <ExplanationTxt>Children's Health System of Texas has established seven standing Committees of the Board, which have the authority to act for and on behalf of CHST, Children's Health Clinical Operations, Children's Medical Center Foundation, and their affiliates, operating divisions and division facilities to fulfill the responsibilities designated in the respective Committee charters. Written minutes are prepared and maintained for all formal meetings of each Committee. Actions by Written Consent are also prepared and maintained as they occur.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b PROCESS TO ESTABLISH COMPENSATION OF OFFICERS AND OTHER KEY EMPLOYEES</FormAndLineReferenceDesc>
        <ExplanationTxt>Line 15b is answered no in accordance with the IRS Form 990 instructions because salary is paid and determined by a related party, Children's Health System of Texas (CHST). CHST is the sole member and officers are employed and paid by CHST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>Children's Health System of Texas (CHST) is the sole member.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a Members or stockholders electing members of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>Directors are appointed by the sole member and approved by the current CCMSC Board of Directors.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7b Decisions requiring approval by members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>Member reserve powers are specified in the organization's Bylaws and represent those actions by the organization which require member approval. These powers generally encompass changes in the mission of the organization, addition of new members, certain dispositions of assets, amendments to the organization's Certificate of Formation and Bylaws, and appointment of directors.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>Complex Care Medical Services Corporation has delegated its oversight and review of the Form 990 to the Board of Directors of Children's Health System of Texas (CHST), its Sole Member. A draft of the Form 990 is presented to the CHST Audit Committee for review prior to filing. A copy of the Final Form 990 is made available to the CHST directors through our Board portal before it is filed.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>Officers, directors, and key employees receive annually a copy of the Children's Health Statement of Interest form to complete. Disclosures made are reviewed by the CHST Legal Department and the Chief Compliance Officer, who are authorized under the Children's Health Conflict of Interest Policy to make determinations under the Policy regarding persons who are medical staff members or employees of Children's Health and its affiliates. Disclosures made by senior officers (as defined in the Policy) are reviewed by the Compliance Officer, the Chief Legal Officer, and CHST's President and Chief Executive Officer to determine if a conflict exists. Disclosures made by directors of CHST and its affiliates, as well as by the President and Chief Executive Officer of CHST, are discussed as necessary with the appropriate delegated Board Committee and, if required pursuant to the Policy, by the appropriate Board of Directors at meetings to determine if further action is needed. A Statement of Interest must be completed annually and Board members are requested to report changes if they occur. A Committee or Board member with a potential conflict is prohibited from participating in deliberations regarding the transaction in question and will recuse themselves from voting.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>IRC section 6104 does not require disclosure of the financial statements, conflict of interest policy and governing documents. The Certificate of Formation, Consolidated Financial Statements, and the conflict of interest policy are made available upon request.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g Other Fees</FormAndLineReferenceDesc>
        <ExplanationTxt>Contract Medical - Total Expense: 731606, Program Service Expense: 731606, Management and General Expenses: , Fundraising Expenses: ; Consulting Fees - Total Expense: 900, Program Service Expense: 900, Management and General Expenses: , Fundraising Expenses: ;</ExplanationTxt>
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        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>true</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>true</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>true</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>