{
"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"
}