{
  "resourceType": "CodeSystem",
  "id": "codesystem-hierarchy-meaning",
  "meta": {
    "lastUpdated": "2026-05-20T15:02:53.575+00:00"
  },
  "text": {
    "status": "generated",
    "div": "\u003cdiv xmlns\u003d\"http://www.w3.org/1999/xhtml\"\u003e\u003cp class\u003d\"res-header-id\"\u003e\u003cb\u003eGenerated Narrative: CodeSystem codesystem-hierarchy-meaning\u003c/b\u003e\u003c/p\u003e\u003ca name\u003d\"codesystem-hierarchy-meaning\"\u003e \u003c/a\u003e\u003ca name\u003d\"hccodesystem-hierarchy-meaning\"\u003e \u003c/a\u003e\u003cp\u003eThis case-sensitive code system \u003ccode\u003ehttp://hl7.org/fhir/codesystem-hierarchy-meaning\u003c/code\u003e defines the following codes:\u003c/p\u003e\u003ctable class\u003d\"codes\"\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003e\u003cb\u003eCode\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eDisplay\u003c/b\u003e\u003c/td\u003e\u003ctd\u003e\u003cb\u003eDefinition\u003c/b\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003egrouped-by\u003ca name\u003d\"codesystem-hierarchy-meaning-grouped-by\"\u003e \u003c/a\u003e\u003c/td\u003e\u003ctd\u003eGrouped By\u003c/td\u003e\u003ctd\u003eNo particular relationship between the concepts can be assumed, except what can be determined by inspection of the definitions of the elements (possible reasons to use this: importing from a source where this is not defined, or where various parts of the hierarchy have different meanings).\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003eis-a\u003ca name\u003d\"codesystem-hierarchy-meaning-is-a\"\u003e \u003c/a\u003e\u003c/td\u003e\u003ctd\u003eIs-A\u003c/td\u003e\u003ctd\u003eA hierarchy where the child concepts have an IS-A relationship with the parents - that is, all the properties of the parent are also true for its child concepts. Not that is-a is a property of the concepts, so additional subsumption relationships may be defined using properties.\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003epart-of\u003ca name\u003d\"codesystem-hierarchy-meaning-part-of\"\u003e \u003c/a\u003e\u003c/td\u003e\u003ctd\u003ePart Of\u003c/td\u003e\u003ctd\u003eChild elements list the individual parts of a composite whole (e.g. body site).\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd style\u003d\"white-space:nowrap\"\u003eclassified-with\u003ca name\u003d\"codesystem-hierarchy-meaning-classified-with\"\u003e \u003c/a\u003e\u003c/td\u003e\u003ctd\u003eClassified With\u003c/td\u003e\u003ctd\u003eChild concepts in the hierarchy may have only one parent, and there is a presumption that the code system is a \u0026quot;closed world\u0026quot; meaning all things must be in the hierarchy. This results in concepts such as \u0026quot;not otherwise classified.\u0026quot;.\u003c/td\u003e\u003c/tr\u003e\u003c/table\u003e\u003c/div\u003e"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "vocab"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "normative"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 5
    }
  ],
  "url": "http://hl7.org/fhir/codesystem-hierarchy-meaning",
  "identifier": [
    {
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:2.16.840.1.113883.4.642.4.785"
    },
    {
      "use": "old",
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:2.16.840.1.113883.4.642.1.768"
    }
  ],
  "version": "6.0.0-ballot4",
  "name": "CodeSystemHierarchyMeaning",
  "title": "Code System Hierarchy Meaning",
  "status": "active",
  "experimental": false,
  "date": "2021-01-05T10:01:24+11:00",
  "publisher": "HL7 International / Terminology Infrastructure",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        }
      ]
    },
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/Vocab/index.cfm"
        }
      ]
    }
  ],
  "description": "The meaning of the hierarchy of concepts in a code system.",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001",
          "display": "World"
        }
      ]
    }
  ],
  "caseSensitive": true,
  "valueSet": "http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning",
  "content": "complete",
  "concept": [
    {
      "code": "grouped-by",
      "display": "Grouped By",
      "definition": "No particular relationship between the concepts can be assumed, except what can be determined by inspection of the definitions of the elements (possible reasons to use this: importing from a source where this is not defined, or where various parts of the hierarchy have different meanings)."
    },
    {
      "code": "is-a",
      "display": "Is-A",
      "definition": "A hierarchy where the child concepts have an IS-A relationship with the parents - that is, all the properties of the parent are also true for its child concepts. Not that is-a is a property of the concepts, so additional subsumption relationships may be defined using properties."
    },
    {
      "code": "part-of",
      "display": "Part Of",
      "definition": "Child elements list the individual parts of a composite whole (e.g. body site)."
    },
    {
      "code": "classified-with",
      "display": "Classified With",
      "definition": "Child concepts in the hierarchy may have only one parent, and there is a presumption that the code system is a \"closed world\" meaning all things must be in the hierarchy. This results in concepts such as \"not otherwise classified.\"."
    }
  ]
}