{"resourceType":"SearchParameter","id":"questionnaireresponse-extensions-QuestionnaireResponse-item-subject","url":"http://hl7.org/fhir/SearchParameter/questionnaireresponse-extensions-QuestionnaireResponse-item-subject","version":"4.0.1","name":"item-subject","status":"draft","experimental":true,"description":"Allows searching for QuestionnaireResponses by item value where the item has isSubject=true","code":"item-subject","base":["QuestionnaireResponse"],"type":"reference","expression":"QuestionnaireResponse.item.where(hasExtension('http://hl7.org/fhir/StructureDefinition/questionnaireresponse-isSubject')).answer.value.ofType(Reference)","xpathUsage":"normal"}