{
  "description": "How the type can be extended. Note that all FHIR types that inherit from ```Element``` have extension-style = fhir-extensions",
  "_filename": "CodeSystem-extension-style.json",
  "package_name": "hl7.fhir.uv.tools",
  "date": "2025-08-05T20:09:06+10:00",
  "publisher": "HL7 International / FHIR Infrastructure",
  "jurisdiction": [ {
    "coding": [ {
      "code": "001",
      "system": "http://unstats.un.org/unsd/methods/m49/m49.htm"
    } ]
  } ],
  "content": "complete",
  "name": "ExtensionStyles",
  "type": null,
  "experimental": "false",
  "resourceType": "CodeSystem",
  "title": "Extension Style Codes",
  "package_version": "0.8.0",
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 3
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "informative",
    "_valueCode": {
      "extension": [ {
        "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical": "http://hl7.org/fhir/tools/ImplementationGuide/hl7.fhir.uv.tools"
      } ]
    }
  } ],
  "status": "active",
  "id": "755719ac-66cd-4ecb-b558-faeb81b9b1e7",
  "kind": null,
  "url": "http://hl7.org/fhir/tools/CodeSystem/extension-style",
  "identifier": [ {
    "value": "urn:oid:2.16.840.1.113883.4.642.40.1.16.7",
    "system": "urn:ietf:rfc:3986"
  } ],
  "concept": [ {
    "code": "none",
    "display": "none",
    "definition": "No extensions"
  }, {
    "code": "fhir-extensions",
    "display": "fhir-extensions",
    "definition": "FHIR extension style: the element defines 'extension' which can be constrained by profiles"
  }, {
    "code": "named-elements",
    "display": "named-elements",
    "definition": "The type can be extended by having additional named elements, where the name is from the elementdefinition-xml-name or elementdefinition-json-name for xml and json respectively"
  } ],
  "caseSensitive": true,
  "version": "0.8.0",
  "contact": [ {
    "telecom": [ {
      "value": "http://www.hl7.org/Special/committees/fiwg",
      "system": "url"
    } ]
  } ]
}