<status value="draft" /> <description value="This extension is used to convey the reason for not providing the patient's health card number as a business identifier." /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Patient.identifier" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <definition value="A reason for not providing the patient's health card number as a business identifier" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://ehealthontario.ca/fhir/StructureDefinition/ext-reason-for-no-HCN" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <type> <code value="CodeableConcept" /> </type> </element> </differential> </StructureDefinition>