{"resourceType":"SearchParameter","id":"AdverseEvent-substance","extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"trial-use"}],"url":"http://hl7.org/fhir/SearchParameter/AdverseEvent-substance","version":"4.0.1","name":"substance","status":"draft","experimental":false,"date":"2021-01-17T07:06:13+11:00","publisher":"Health Level Seven International (Patient Care)","contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"}]},{"telecom":[{"system":"url","value":"http://www.hl7.org/Special/committees/patientcare/index.cfm"}]}],"description":"Refers to the specific entity that caused the adverse event","code":"substance","base":["AdverseEvent"],"type":"reference","expression":"AdverseEvent.suspectEntity.instance","xpath":"f:AdverseEvent/f:suspectEntity/f:instance","xpathUsage":"normal","target":["Immunization","Device","Medication","Procedure","Substance","MedicationAdministration","MedicationStatement"]}