Definition
for
Code
System
CodeSystemHierarchyMeaning
SystemCodeSystemHierarchyMeaning
<?xml version="1.0" encoding="UTF-8"?>
<CodeSystem xmlns="http://hl7.org/fhir">
<id value="codesystem-hierarchy-meaning"/>
<meta>
<lastUpdated value="2025-12-18T07:07:42.170+11:00"/>
</meta>
<text>
<status value="generated"/>
<div xmlns="http://www.w3.org/1999/xhtml">
This code system http://hl7.org/fhir/codesystem-hierarchy-meaning defines the following
codes:
<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>
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> 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>
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 or the [subsumes](extension-codesystem-subsumes.html) extension.
<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>
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.".
<td> 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.".</td>
</tr>
</table>
</div>
</text>
<extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
<valueCode value="vocab"/>
</extension>
<extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
<valueCode value="normative"/>
</extension>
<extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
<valueInteger value="5"/>
</extension>
<url value="http://hl7.org/fhir/codesystem-hierarchy-meaning"/>
<identifier>
<system value="urn:ietf:rfc:3986"/>
<value value="urn:oid:2.16.840.1.113883.4.642.4.785"/>
</identifier>
<identifier>
<use value="old"/>
<system value="urn:ietf:rfc:3986"/>
<value value="urn:oid:2.16.840.1.113883.4.642.1.768"/>
</identifier>
<version value="6.0.0-ballot4"/>
<name value="CodeSystemHierarchyMeaning"/>
<title value="Code System Hierarchy Meaning"/>
<status value="active"/>
<experimental value="false"/>
<date value="2021-01-05T10:01:24+11:00"/>
<publisher value="HL7 International / Terminology Infrastructure"/>
<contact>
<telecom>
<system value="url"/>
<value value="http://hl7.org/fhir"/>
</telecom>
</contact>
<contact>
<telecom>
<system value="url"/>
<value value="http://www.hl7.org/Special/committees/Vocab/index.cfm"/>
</telecom>
</contact>
<description value="The meaning of the hierarchy of concepts in a code system."/>
<jurisdiction>
<coding>
<system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
<code value="001"/>
<display value="World"/>
</coding>
</jurisdiction>
<caseSensitive value="true"/>
<valueSet value="http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning"/>
<content value="complete"/>
<concept>
<code value="grouped-by"/>
<display value="Grouped By"/>
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).
<definition value="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)."/>
</concept>
<concept>
<code value="is-a"/>
<display value="Is-A"/>
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 or the [subsumes](extension-codesystem-subsumes.html) extension.
<definition value="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."/>
</concept>
<concept>
<code value="part-of"/>
<display value="Part Of"/>
<definition value="Child elements list the individual parts of a composite whole (e.g. body site)."/>
</concept>
<concept>
<code value="classified-with"/>
<display value="Classified With"/>
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.".
<definition value="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."."/>
</concept>
</
CodeSystem
>
Usage
note:
every
effort
has
been
made
to
ensure
that
the
examples
are
correct
and
useful,
but
they
are
not
a
normative
part
of
the
specification.
Terminology
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