<status value="draft" /> <fhirVersion value="4.0.0" /> <kind value="resource" /> <abstract value="false" /> <type value="Condition" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Condition" /> <derivation value="constraint" /> <differential> <element id="Condition"> <path value="Condition" /> </element> <element id="Condition.extension"> <path value="Condition.extension" /> </element> <element id="Condition.extension:age-at-event"> <path value="Condition.extension" /> <sliceName value="age-at-event" /> <sliceIsConstraining value="false" /> <label value="age_at_event" /> <short value="Patient age at determination" /> <definition value="Age of the Patient when their condition was registered" /> <min value="0" /> <max value="1" /> <type> <code value="Extension" /> <profile value="http://fhir.kids-first.io/StructureDefinition/age-at-event" /> </type> </element> <element id="Condition.identifier"> <path value="Condition.identifier" /> <mustSupport value="true" /> </element> </differential> </StructureDefinition>