{"caseSensitive":true,"concept":[{"code":"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).","display":"Grouped By"},{"code":"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.","display":"Is-A"},{"code":"part-of","definition":"Child elements list the individual parts of a composite whole (e.g. body site).","display":"Part Of"},{"code":"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.\".","display":"Classified With"}],"contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"}]},{"telecom":[{"system":"url","value":"http://www.hl7.org/Special/committees/Vocab/index.cfm"}]}],"content":"complete","date":"2021-01-05T10:01:24+11:00","description":"The meaning of the hierarchy of concepts in a code system.","experimental":false,"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}],"id":"codesystem-hierarchy-meaning","identifier":[{"system":"urn:ietf:rfc:3986","value":"urn:oid:2.16.840.1.113883.4.642.4.785"},{"system":"urn:ietf:rfc:3986","use":"old","value":"urn:oid:2.16.840.1.113883.4.642.1.768"}],"jurisdiction":[{"coding":[{"code":"001","display":"World","system":"http://unstats.un.org/unsd/methods/m49/m49.htm"}]}],"meta":{"lastUpdated":"2026-04-01T17:59:15.240+00:00"},"name":"CodeSystemHierarchyMeaning","publisher":"HL7 International / Terminology Infrastructure","resourceType":"CodeSystem","status":"active","text":{"div":"<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem codesystem-hierarchy-meaning</b></p><a name=\"codesystem-hierarchy-meaning\"> </a><a name=\"hccodesystem-hierarchy-meaning\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/codesystem-hierarchy-meaning</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">grouped-by<a name=\"codesystem-hierarchy-meaning-grouped-by\"> </a></td><td>Grouped By</td><td>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).</td></tr><tr><td style=\"white-space:nowrap\">is-a<a name=\"codesystem-hierarchy-meaning-is-a\"> </a></td><td>Is-A</td><td>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.</td></tr><tr><td style=\"white-space:nowrap\">part-of<a name=\"codesystem-hierarchy-meaning-part-of\"> </a></td><td>Part Of</td><td>Child elements list the individual parts of a composite whole (e.g. body site).</td></tr><tr><td style=\"white-space:nowrap\">classified-with<a name=\"codesystem-hierarchy-meaning-classified-with\"> </a></td><td>Classified With</td><td>Child concepts in the hierarchy may have only one parent, and there is a presumption that the code system is a &quot;closed world&quot; meaning all things must be in the hierarchy. This results in concepts such as &quot;not otherwise classified.&quot;.</td></tr></table></div>","status":"generated"},"title":"Code System Hierarchy Meaning","url":"http://hl7.org/fhir/codesystem-hierarchy-meaning","valueSet":"http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning","version":"6.0.0-ballot4"}