{
  "description": "Code for the event this message represents or link to event definition",
  "_filename": "SearchParameter-MessageHeader-event.json",
  "package_name": "hl7.fhir.r4.core",
  "date": "2019-11-01T09:29:23+11:00",
  "expression": "MessageHeader.event",
  "publisher": "Health Level Seven International (Infrastructure And Messaging)",
  "name": "event",
  "xpath": "f:MessageHeader/f:eventCoding | f:MessageHeader/f:eventUri",
  "xpathUsage": "normal",
  "type": "token",
  "experimental": "false",
  "resourceType": "SearchParameter",
  "title": null,
  "package_version": "4.0.1",
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "trial-use"
  } ],
  "status": "draft",
  "id": "fe725399-be50-4911-a419-d4b5e4311e32",
  "kind": null,
  "url": "http://hl7.org/fhir/SearchParameter/MessageHeader-event",
  "code": "event",
  "base": [ "MessageHeader" ],
  "version": "4.0.1",
  "contact": [ {
    "telecom": [ {
      "value": "http://hl7.org/fhir",
      "system": "url"
    } ]
  }, {
    "telecom": [ {
      "value": "http://www.hl7.org/special/committees/inm/index.cfm",
      "system": "url"
    } ]
  } ]
}