{
  "description": "This value set includes example Onset Type codes which are used to identify the event for which the onset, starting date, is required.",
  "_filename": "CodeSystem-ex-onsettype.json",
  "package_name": "hl7.fhir.uv.xver-r4.r4b.r4",
  "date": "2025-09-13T16:11:23-04:00",
  "publisher": "FHIR Infrastructure",
  "jurisdiction": [ {
    "coding": [ {
      "code": "001",
      "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "display": "World"
    } ]
  } ],
  "content": "complete",
  "name": "ExampleOnsetType(Reason)Codes",
  "copyright": "This is an example set.",
  "type": null,
  "experimental": "false",
  "resourceType": "CodeSystem",
  "title": "Example Onset Type (Reason) Codes",
  "package_version": "0.0.1-snapshot-2",
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/package-source",
    "extension": [ {
      "url": "packageId",
      "valueId": "hl7.fhir.uv.xver-r4.r4b"
    }, {
      "url": "version",
      "valueString": "0.0.1-snapshot-2"
    } ]
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 0,
    "_valueInteger": {
      "extension": [ {
        "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical": "http://hl7.org/fhir/4.0/ImplementationGuide/hl7.fhir.uv.xver-r4.r4b"
      } ]
    }
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "trial-use",
    "_valueCode": {
      "extension": [ {
        "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical": "http://hl7.org/fhir/4.0/ImplementationGuide/hl7.fhir.uv.xver-r4.r4b"
      } ]
    }
  } ],
  "status": "draft",
  "id": "bee3ca82-5678-410a-98f0-fbcc6d0505e8",
  "valueSet": "http://hl7.org/fhir/ValueSet/ex-onsettype",
  "kind": null,
  "url": "http://hl7.org/fhir/ex-onsettype",
  "concept": [ {
    "code": "lxm",
    "display": "Last Exam",
    "definition": "Date of last examination."
  }, {
    "code": "sym",
    "display": "Start of Symptoms",
    "definition": "Date when symptoms were first noticed."
  }, {
    "code": "lmn",
    "display": "Last Menstruation",
    "definition": "Start date of last menstruation."
  } ],
  "caseSensitive": true,
  "version": "4.0.1",
  "contact": [ {
    "name": "FHIR Infrastructure",
    "telecom": [ {
      "value": "http://www.hl7.org/Special/committees/fiwg",
      "system": "url"
    } ]
  } ]
}