<status value="draft" /> <experimental value="false" /> <date value="2026-02-26" /> <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="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="DocumentReference" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Attests to accuracy of the document." /> <definition value="A participant who has authenticated the accuracy of the document. (Backport from FHIR R5.)" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <min value="1" /> </element> <element id="Extension.extension:mode"> <path value="Extension.extension" /> <sliceName value="mode" /> <short value="personal | professional | legal | official" /> <definition value="Indicates the level of authority of the attestation." /> <min value="1" /> <max value="1" /> </element> <element id="Extension.extension:mode.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:mode.url"> <path value="Extension.extension.url" /> <fixedUri value="mode" /> </element> <element id="Extension.extension:mode.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="CodeableConcept" /> </type> <binding> <strength value="preferred" /> <valueSet value="https://hl7.org/fhir/valueset-composition-attestation-mode.html" /> </binding> </element> <element id="Extension.extension:time"> <path value="Extension.extension" /> <sliceName value="time" /> <short value="When the document was attested." /> <definition value="When the document was attested by the party." /> <requirements value="Identifies when the information in the document was deemed accurate. (Things may have changed since then.)." /> <max value="1" /> </element> <element id="Extension.extension:time.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:time.url"> <path value="Extension.extension.url" /> <fixedUri value="time" /> </element> <element id="Extension.extension:time.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="dateTime" /> </type> </element> <element id="Extension.extension:party"> <path value="Extension.extension" /> <sliceName value="party" /> <short value="Who attested the document." /> <definition value="Who attested the document in the specified way." /> <requirements value="Identifies who has taken on the responsibility for accuracy of the document content." /> <max value="1" /> </element> <element id="Extension.extension:party.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:party.url"> <path value="Extension.extension.url" /> <fixedUri value="party" /> </element> <element id="Extension.extension:party.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Patient" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Practitioner" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-PractitionerRole" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Organization" /> </type> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="https://fhir.nhs.wales/StructureDefinition/Extension-DataStandardsWales-DocumentReference.attester" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <max value="0" /> </element> </differential> </StructureDefinition>