<status value="draft" /> <date value="2026-08-26" /> <publisher value="NHS Wales" /> <contact> <name value="FHIR Standards" /> <telecom> <system value="email" /> <value value="fhir.standards@wales.nhs.uk" /> <use value="work" /> <rank value="1" /> </telecom> </contact> <copyright value="2026 NHS Wales" /> <fhirVersion value="4.0.1" /> <kind value="resource" /> <abstract value="false" /> <type value="OrganizationAffiliation" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/OrganizationAffiliation" /> <derivation value="constraint" /> <differential> <element id="OrganizationAffiliation.identifier"> <path value="OrganizationAffiliation.identifier" /> <slicing> <discriminator> <type value="value" /> <path value="system" /> </discriminator> <rules value="open" /> </slicing> <comment value="Identifiers for the organisation affiliation SHOULD be populated if the data exists" /> </element> <element id="OrganizationAffiliation.identifier:wrtsAffiliationIdentifier"> <path value="OrganizationAffiliation.identifier" /> <sliceName value="wrtsAffiliationIdentifier" /> <short value="WRTS Affiliation Identifier" /> <definition value="An identifier concatenating the WRTS organization identifiers of the grouping organization (e.g. region or cluster) and the participating member organization, with a hyphen (-) separator" /> <max value="1" /> <mustSupport value="true" /> </element> <element id="OrganizationAffiliation.identifier:wrtsAffiliationIdentifier.system"> <path value="OrganizationAffiliation.identifier.system" /> <min value="1" /> <fixedUri value="https://fhir.nhs.wales/Id/wrts-affiliation-identifier" /> </element> <element id="OrganizationAffiliation.organization"> <path value="OrganizationAffiliation.organization" /> <min value="1" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Organization" /> </type> </element> <element id="OrganizationAffiliation.participatingOrganization"> <path value="OrganizationAffiliation.participatingOrganization" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Organization" /> </type> <mustSupport value="true" /> </element> <element id="OrganizationAffiliation.network"> <path value="OrganizationAffiliation.network" /> <max value="0" /> </element> <element id="OrganizationAffiliation.code"> <path value="OrganizationAffiliation.code" /> <mustSupport value="true" /> </element> <element id="OrganizationAffiliation.location"> <path value="OrganizationAffiliation.location" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Location" /> </type> <mustSupport value="true" /> </element> <element id="OrganizationAffiliation.healthcareService"> <path value="OrganizationAffiliation.healthcareService" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-HealthcareService" /> </type> </element> </differential> </StructureDefinition>