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        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2 FIN 48 (ASC 740) footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>MANAGEMENT IS OF THE OPINION THAT SUBSTANTIALLY ALL OF THE HOSPITAL'S, FOUNDATION'S, CAPTIVE'S, PHOENIX CHILDREN'S CARE NETWORK'S AND PHOENIX CHILDREN'S PROPERTY DEVELOPMENT, LLC'S ACTIVITIES ARE RELATED TO THEIR EXEMPT PURPOSES, AND PHOENIX CHILDREN'S CARDIOLOGY DIAGNOSTICS LLC'S ACTIVITIES WILL NOT RESULT IN TAXABLE INCOME. NO MATERIAL UNCERTAIN TAX POSITIONS HAVE BEEN IDENTIFIED OR RECORDED IN THE CONSOLIDATED FINANCIAL STATEMENTS AT DECEMBER 31, 2022 OR 2021.</ExplanationTxt>
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        <ExplanationTxt>PHOENIX CHILDREN'S HOSPITAL (PCH) OFFERS A SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN (SERP) TO CERTAIN EXECUTIVES OF THE ORGANIZATION. ELIGIBLE PARTICIPANTS ARE SELECTED BY THE PCH BOARD OF DIRECTORS. PARTICIPANT VESTING OCCURS UPON RETIREMENT, DISABILITY BEFORE SEPARATION, INVOLUNTARY SEPARATION (OTHER THAN FOR CAUSE) OR DEATH. THE FOLLOWING INDIVIDUAL PARTICIPATED IN THE SERP PLAN AND RECEIVED A TAXABLE SERP PAYOUT DURING 2022 THAT IS INCLUDED IN SCHEDULE J, PART II, COLUMN (B)(III) AS OTHER REPORTABLE COMPENSATION: ROBERT L. MEYER - $348,211 CARMEN NEUBERGER - $87,521 KARI CORNICELLI - $66,237</ExplanationTxt>
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        <FormAndLineReferenceDesc>Schedule J, Part II ADDITIONAL INFORMATION</FormAndLineReferenceDesc>
        <ExplanationTxt>MICHAEL RITCHEY, MD RECEIVED COMPENSATION FOR MEDICAL SERVICES RENDERED IN THE CAPACITY OF STAFF PHYSICIAN FOR PHOENIX CHILDREN'S HOSPITAL, NOT FOR HIS DUTIES AS CURRENT BOARD MEMBER.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part III, Line 4 PROGRAM SERVICE ACCOMPLISHMENTS</FormAndLineReferenceDesc>
        <ExplanationTxt>ARIZONA CHILDREN'S RISK SOLUTIONS (FORMERLY CAMBRIDGE ARIZONA INSURANCE COMPANY), (AN ARIZONA NON-PROFIT CORPORATION), ENGAGES IN THE BUSINESS OF PROVIDING CAPTIVE INSURANCE SERVICES TO NON-PROFIT CORPORATIONS WITHIN THE STATE OF ARIZONA. THE COMPANY SPECIFICALLY PROVIDES PROFESSIONAL LIABILITY INSURANCE ON A CLAIMS-MADE BASIS AND GENERAL LIABILITY INSURANCE ON AN OCCURRENCE BASIS PURSUANT TO THE PROVISIONS OF ARIZONA REVISED STATUTES 20-1098 AND WAS APPROVED FOR BUSINESS AS A PURE CAPTIVE INSURER BY THE STATE OF ARIZONA DEPARTMENT OF INSURANCE ON FEBRUARY 28, 2008. THE COMPANY SPECIFICALLY OFFERS INSURANCE COVERAGE TO ITS SOLE MEMBER, PHOENIX CHILDREN'S HOSPITAL, INC (PCH). THE ACTIVITIES AND OPERATIONS OF ARIZONA CHILDREN'S RISK SOLUTIONS EXCLUSIVELY BENEFIT PHOENIX CHILDREN'S HOSPITAL BY OFFERING A PROGRAM OF SELF INSURANCE FOR THE HOSPITAL.</ExplanationTxt>
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        <ExplanationTxt>ARIZONA CHILDREN'S RISK SOLUTIONS DOES NOT HAVE EMPLOYEES, BUT SHARES COSTS OF PERSONNEL, SERVICES, AND EXPENSES WITH PHOENIX CHILDREN'S HOSPITAL, A RELATED TAX-EXEMPT ORGANIZATION.</ExplanationTxt>
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        <ExplanationTxt>THIS ORGANIZATION DOES NOT PAY ANY COMPENSATION. COMPENSATION IS PAID, AND COMPENSATION PRACTICES ARE DETERMINED, BY PHOENIX CHILDREN'S HOSPITAL.</ExplanationTxt>
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        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>AZ</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>CHA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>PHX CHILDREN'S CARDIOLOGY DIAGNOSTICS LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1919 E THOMAS ROAD</AddressLine1Txt>
          <CityNm>PHOENIX</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85016</ZIPCd>
        </USAddress>
        <EIN>464850215</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>AZ</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <PredominantIncomeTypeTxt>N/A</PredominantIncomeTypeTxt>
      </IdRelatedOrgTxblPartnershipGrp>
      <IdRelatedOrgTxblPartnershipGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>PHX CHILDREN'S PROPERTY DEVELOPMENT LLC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1919 E THOMAS ROAD</AddressLine1Txt>
          <CityNm>PHOENIX</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85016</ZIPCd>
        </USAddress>
        <EIN>472408123</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>AZ</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <PredominantIncomeTypeTxt>N/A</PredominantIncomeTypeTxt>
      </IdRelatedOrgTxblPartnershipGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</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>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>true</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
