{
  "resourceType": "OperationDefinition",
  "id": "CapabilityStatement-versions",
  "text": {
    "status": "generated",
    "div": "\u003cdiv xmlns\u003d\"http://www.w3.org/1999/xhtml\"\u003e\u003cp class\u003d\"res-header-id\"\u003e\u003cb\u003eGenerated Narrative: OperationDefinition CapabilityStatement-versions\u003c/b\u003e\u003c/p\u003e\u003ca name\u003d\"CapabilityStatement-versions\"\u003e \u003c/a\u003e\u003ca name\u003d\"hcCapabilityStatement-versions\"\u003e \u003c/a\u003e\u003cp\u003eURL: [base]/$versions\u003c/p\u003e\u003ch3\u003eParameters\u003c/h3\u003e\u003ctable class\u003d\"grid\"\u003e\u003ctr\u003e\u003ctd\u003e\u003cb\u003eUse\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eName\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eScope\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eCardinality\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eType\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eBinding\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eDocumentation\u003c/b\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003eOUT\u003c/td\u003e\u003ctd\u003eversion\u003c/td\u003e\u003ctd/\u003e\u003ctd\u003e1..*\u003c/td\u003e\u003ctd\u003e\u003ca href\u003d\"datatypes.html#code\"\u003ecode\u003c/a\u003e\u003c/td\u003e\u003ctd/\u003e\u003ctd\u003e\u003cdiv\u003e\u003cp\u003eA version supported by the server. Use the major.minor version like 3.0\u003c/p\u003e\n\u003c/div\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003eOUT\u003c/td\u003e\u003ctd\u003edefault\u003c/td\u003e\u003ctd/\u003e\u003ctd\u003e1..1\u003c/td\u003e\u003ctd\u003e\u003ca href\u003d\"datatypes.html#code\"\u003ecode\u003c/a\u003e\u003c/td\u003e\u003ctd\u003e\u003ca href\u003d\"valueset-FHIR-version.html\"\u003eFHIRVersion\u003c/a\u003e (Required)\u003c/td\u003e\u003ctd\u003e\u003cdiv\u003e\u003cp\u003eThe default version for the server. Use the major.minor version like 3.0\u003c/p\u003e\n\u003c/div\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/table\u003e\u003c/div\u003e"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 5
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "normative"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "fhir"
    }
  ],
  "url": "http://hl7.org/fhir/OperationDefinition/CapabilityStatement-versions",
  "version": "6.0.0-ballot4",
  "name": "Versions",
  "title": "Discover what versions a server supports",
  "status": "active",
  "kind": "operation",
  "experimental": false,
  "date": "2026-05-20T15:02:53+00:00",
  "publisher": "HL7 International / FHIR Infrastructure",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        },
        {
          "system": "email",
          "value": "fhir@lists.hl7.org"
        }
      ]
    },
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/fiwg"
        }
      ]
    }
  ],
  "description": "Using the [FHIR Version Mime Type Parameter](http.html#version-parameter), a server can support [multiple versions on the same end-point](versioning.html#mt-version). The only way for client to find out what versions a server supports in this fashion is the $versions operation. The client invokes the operation with no parameters. and the server returns the list of supported versions, along with the default version it will use if no fhirVersion parameter is present",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001",
          "display": "World"
        }
      ]
    }
  ],
  "affectsState": false,
  "code": "versions",
  "resource": [
    "CapabilityStatement"
  ],
  "system": true,
  "type": false,
  "instance": false,
  "parameter": [
    {
      "name": "version",
      "use": "out",
      "min": 1,
      "max": "*",
      "documentation": "A version supported by the server. Use the major.minor version like 3.0",
      "type": "code"
    },
    {
      "name": "default",
      "use": "out",
      "min": 1,
      "max": "1",
      "documentation": "The default version for the server. Use the major.minor version like 3.0",
      "type": "code",
      "binding": {
        "strength": "required",
        "valueSet": "http://hl7.org/fhir/ValueSet/FHIR-version|6.0.0-ballot4"
      }
    }
  ]
}