{
  "description": "Optional Extensions Element",
  "_filename": "SearchParameter-codesystem-extensions-CodeSystem-effective.json",
  "package_name": "hl7.fhir.r5.core",
  "date": null,
  "expression": "CodeSystem.extension('http://hl7.org/fhir/StructureDefinition/codesystem-effectiveDate'.value)",
  "publisher": null,
  "name": "effective",
  "type": "date",
  "experimental": "true",
  "resourceType": "SearchParameter",
  "title": null,
  "package_version": "5.0.0-snapshot3",
  "status": "draft",
  "id": "1fb2edbc-f13e-4a17-a88c-be4885acb636",
  "kind": null,
  "processingMode": "normal",
  "url": "http://hl7.org/fhir/SearchParameter/codesystem-extensions-CodeSystem-effective",
  "code": "effective",
  "base": [ "CodeSystem" ],
  "version": "5.0.0"
}