Definition
for
Code
System
SearchModifierCode
SystemSearchModifierCode
<?xml version="1.0" encoding="UTF-8"?>
missing
exact
The search parameter returns resources that have a value that exactly matches the supplied
parameter (the whole string, including casing and accents).
contains
The search parameter returns resources that include the supplied parameter value anywhere
within the field being searched.
not
text
The search parameter is processed as a string that searches text associated with the code/value
- either CodeableConcept.text, Coding.display, or Identifier.type.text.
in
The search parameter is a URI (relative or absolute) that identifies a value set, and
the search parameter tests whether the coding is in the specified value set.
not-in
The search parameter is a URI (relative or absolute) that identifies a value set, and
the search parameter tests whether the coding is not in the specified value set.
below
The search parameter tests whether the value in a resource is subsumed by the specified
value (is-a, or hierarchical relationships).
above
The search parameter tests whether the value in a resource subsumes the specified value
(is-a, or hierarchical relationships).
type
The search parameter only applies to the Resource Type specified as a modifier (e.g. the
modifier is not actually :type, but :Patient etc.).
identifier
ofType
The search parameter has the format system|code|value, where the system and code refer
to an Identifier.type.coding.system and .code, and match if any of the type codes match.
All 3 parts must be present.
The search parameter returns resources that have a value that exactly matches the supplied
parameter (the whole string, including casing and accents).
The search parameter returns resources that include the supplied parameter value anywhere
within the field being searched.
The search parameter is processed as a string that searches text associated with the code/value
- either CodeableConcept.text, Coding.display, or Identifier.type.text.
The search parameter is a URI (relative or absolute) that identifies a value set, and
the search parameter tests whether the coding is in the specified value set.
The search parameter is a URI (relative or absolute) that identifies a value set, and
the search parameter tests whether the coding is not in the specified value set.
The search parameter tests whether the value in a resource is subsumed by the specified
value (is-a, or hierarchical relationships).
The search parameter tests whether the value in a resource subsumes the specified value
(is-a, or hierarchical relationships).
The search parameter only applies to the Resource Type specified as a modifier (e.g. the
modifier is not actually :type, but :Patient etc.).
The search parameter has the format system|code|value, where the system and code refer
to an Identifier.type.coding.system and .code, and match if any of the type codes match.
All 3 parts must be present.
<?xml version="1.0" encoding="UTF-8"?>
<CodeSystem xmlns="http://hl7.org/fhir"> <id value="search-modifier-code"/> <meta> <lastUpdated value="2025-12-18T07:07:42.170+11:00"/> </meta> <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml"> <p class="res-header-id"> <b> Generated Narrative: CodeSystem search-modifier-code</b> </p> <a name="search-modifier-code"> </a> <a name="hcsearch-modifier-code"> </a> <p> This case-sensitive code system <code> http://hl7.org/fhir/search-modifier-code</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">missing <a name="search-modifier-code-missing"> </a> </td> <td> Missing</td> <td> The search parameter returns resources that have a value or not.</td> </tr> <tr> <td style="white-space:nowrap">exact <a name="search-modifier-code-exact"> </a> </td> <td> Exact</td> <td> The search parameter returns resources that have a value that exactly matches the
supplied parameter (the whole string, including casing and accents).</td>
</tr> <tr> <td style="white-space:nowrap">contains <a name="search-modifier-code-contains"> </a> </td> <td> Contains</td> <td> The search parameter returns resources that include the supplied parameter value
anywhere within the field being searched.</td>
</tr> <tr> <td style="white-space:nowrap">not <a name="search-modifier-code-not"> </a> </td> <td> Not</td> <td> The search parameter returns resources that do not contain a match.</td> </tr> <tr> <td style="white-space:nowrap">text <a name="search-modifier-code-text"> </a> </td> <td> Text</td> <td> The search parameter is processed as a string that searches text associated with
the code/value - either CodeableConcept.text, Coding.display, Identifier.type.text,
or Reference.display.</td>
</tr> <tr> <td style="white-space:nowrap">in <a name="search-modifier-code-in"> </a> </td> <td> In</td> <td> The search parameter is a URI (relative or absolute) that identifies a value set,
and the search parameter tests whether the coding is in the specified value set.</td>
</tr> <tr> <td style="white-space:nowrap">not-in <a name="search-modifier-code-not-in"> </a> </td> <td> Not In</td> <td> The search parameter is a URI (relative or absolute) that identifies a value set,
and the search parameter tests whether the coding is not in the specified value
set.</td>
</tr> <tr> <td style="white-space:nowrap">below <a name="search-modifier-code-below"> </a> </td> <td> Below</td> <td> The search parameter tests whether the value in a resource is subsumed by the specified
value (is-a, or hierarchical relationships).</td>
</tr> <tr> <td style="white-space:nowrap">above <a name="search-modifier-code-above"> </a> </td> <td> Above</td> <td> The search parameter tests whether the value in a resource subsumes the specified
value (is-a, or hierarchical relationships).</td>
</tr> <tr> <td style="white-space:nowrap">type <a name="search-modifier-code-type"> </a> </td> <td> Type</td> <td> The search parameter only applies to the Resource Type specified as a modifier
(e.g. the modifier is not actually :type, but :Patient etc.).</td>
</tr> <tr> <td style="white-space:nowrap">identifier <a name="search-modifier-code-identifier"> </a> </td> <td> Identifier</td> <td> The search parameter applies to the identifier on the resource, not the reference.</td> </tr> <tr> <td style="white-space:nowrap">of-type <a name="search-modifier-code-of-type"> </a> </td> <td> Of Type</td> <td> The search parameter has the format system|code|value, where the system and code
refer to an Identifier.type.coding.system and .code, and match if any of the type
codes match. All 3 parts must be present.</td>
</tr> <tr> <td style="white-space:nowrap">code-text <a name="search-modifier-code-code-text"> </a> </td> <td> Code Text</td> <td> Tests whether the textual display value in a resource (e.g., CodeableConcept.text,
Coding.display, or Reference.display) matches the supplied parameter value.</td>
</tr> <tr> <td style="white-space:nowrap">text-advanced <a name="search-modifier-code-text-advanced"> </a> </td> <td> Text Advanced</td> <td> Tests whether the value in a resource matches the supplied parameter value using
advanced text handling that searches text associated with the code/value - e.g.,
CodeableConcept.text, Coding.display, or Identifier.type.text.</td>
</tr> <tr> <td style="white-space:nowrap">iterate <a name="search-modifier-code-iterate"> </a> </td> <td> Iterate</td> <td> The search parameter indicates an inclusion directive (_include, _revinclude) that
is applied to an included resource instead of the matching resource.</td>
</tr> </table> </div> </text> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"> <valueCode value="fhir"/> </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/search-modifier-code"/> <identifier> <system value="urn:ietf:rfc:3986"/> <value value="urn:oid:2.16.840.1.113883.4.642.4.640"/> </identifier> <identifier> <use value="old"/> <system value="urn:ietf:rfc:3986"/> <value value="urn:oid:2.16.840.1.113883.4.642.1.625"/> </identifier> <identifier> <use value="old"/> <system value="urn:ietf:rfc:3986"/> <value value="urn:oid:2.16.840.1.113883.4.642.2.92"/> </identifier> <version value="6.0.0-ballot4"/> <name value="SearchModifierCode"/> <title value="Search Modifier Code"/> <status value="active"/> <experimental value="false"/> <date value="2021-01-05T10:01:24+11:00"/> <publisher value="HL7 International / FHIR Infrastructure"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> <telecom> <system value="email"/> <value value="fhir@lists.hl7.org"/> </telecom> </contact> <contact> <telecom> <system value="url"/> <value value="http://www.hl7.org/Special/committees/fiwg"/> </telecom> </contact> <description value="A supported modifier for a search parameter."/> <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/search-modifier-code"/> <content value="complete"/> <concept> <code value="missing"/> <display value="Missing"/> <definition value="The search parameter returns resources that have a value or not."/> </concept> <concept> <code value="exact"/> <display value="Exact"/> <definition value="The search parameter returns resources that have a value that exactly matches the
supplied parameter (the whole string, including casing and accents)."/>
</concept> <concept> <code value="contains"/> <display value="Contains"/> <definition value="The search parameter returns resources that include the supplied parameter value
anywhere within the field being searched."/>
</concept> <concept> <code value="not"/> <display value="Not"/> <definition value="The search parameter returns resources that do not contain a match."/> </concept> <concept> <code value="text"/> <display value="Text"/> <definition value="The search parameter is processed as a string that searches text associated with
the code/value - either CodeableConcept.text, Coding.display, Identifier.type.text,
or Reference.display."/>
</concept> <concept> <code value="in"/> <display value="In"/> <definition value="The search parameter is a URI (relative or absolute) that identifies a value set,
and the search parameter tests whether the coding is in the specified value set."/>
</concept> <concept> <code value="not-in"/> <display value="Not In"/> <definition value="The search parameter is a URI (relative or absolute) that identifies a value set,
and the search parameter tests whether the coding is not in the specified value
set."/>
</concept> <concept> <code value="below"/> <display value="Below"/> <definition value="The search parameter tests whether the value in a resource is subsumed by the specified
value (is-a, or hierarchical relationships)."/>
</concept> <concept> <code value="above"/> <display value="Above"/> <definition value="The search parameter tests whether the value in a resource subsumes the specified
value (is-a, or hierarchical relationships)."/>
</concept> <concept> <code value="type"/> <display value="Type"/> <definition value="The search parameter only applies to the Resource Type specified as a modifier
(e.g. the modifier is not actually :type, but :Patient etc.)."/>
</concept> <concept> <code value="identifier"/> <display value="Identifier"/> <definition value="The search parameter applies to the identifier on the resource, not the reference."/> </concept> <concept> <code value="of-type"/> <display value="Of Type"/> <definition value="The search parameter has the format system|code|value, where the system and code
refer to an Identifier.type.coding.system and .code, and match if any of the type
codes match. All 3 parts must be present."/>
</concept> <concept> <code value="code-text"/> <display value="Code Text"/> <definition value="Tests whether the textual display value in a resource (e.g., CodeableConcept.text,
Coding.display, or Reference.display) matches the supplied parameter value."/>
</concept> <concept> <code value="text-advanced"/> <display value="Text Advanced"/> <definition value="Tests whether the value in a resource matches the supplied parameter value using
advanced text handling that searches text associated with the code/value - e.g.,
CodeableConcept.text, Coding.display, or Identifier.type.text."/>
</concept> <concept> <code value="iterate"/> <display value="Iterate"/> <definition value="The search parameter indicates an inclusion directive (_include, _revinclude) that
is applied to an included resource instead of the matching resource."/>
</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.
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