Definition
for
Code
System
CodeSystemHierarchyMeaning
SystemCodeSystemHierarchyMeaning
<?xml version="1.0" encoding="UTF-8"?>
This code system http://hl7.org/fhir/codesystem-hierarchy-meaning defines the following
codes:
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)
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
part-of
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."
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)
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
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."
<CodeSystem xmlns="http://hl7.org/fhir">
<id value="codesystem-hierarchy-meaning"/>
<meta>
<lastUpdated value="2025-12-17T09:50:17.012+00:00"/>
</meta>
<text>
<status value="generated"/>
<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 "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-ballot3"/> <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"/> <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"/> <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"/> <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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