{
"resourceType": "SearchParameter", "id": "codesystem-extensions-CodeSystem-effective", "url": "http://hl7.org/fhir/SearchParameter/codesystem-extensions-CodeSystem-effective", "version": "4.0.1", "name": "effective", "status": "draft", "experimental": true, "description": "Optional Extensions Element", "code": "effective", "base": [ "CodeSystem" ], "type": "date", "xpath": "f:CodeSystem/f:extension[@url='http://hl7.org/fhir/StructureDefinition/codesystem-effectiveDate'] | /f:#effectiveDate", "xpathUsage": "normal"
}