<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="search-param-type"/><meta><lastUpdated value="2026-04-03T20:06:10.198+00:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem search-param-type</b></p><a name="search-param-type"> </a><a name="hcsearch-param-type"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/search-param-type</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">number<a name="search-param-type-number"> </a></td><td>Number</td><td>Search parameter SHALL be a number (a whole number, or a decimal).</td></tr><tr><td style="white-space:nowrap">date<a name="search-param-type-date"> </a></td><td>Date/DateTime</td><td>Search parameter is on a date/time. The date format is the standard XML format, though other formats may be supported.</td></tr><tr><td style="white-space:nowrap">string<a name="search-param-type-string"> </a></td><td>String</td><td>Search parameter is a simple string, like a name part. Search is case-insensitive and accent-insensitive. May match just the start of a string. String parameters may contain spaces.</td></tr><tr><td style="white-space:nowrap">token<a name="search-param-type-token"> </a></td><td>Token</td><td>Search parameter on a coded element or identifier. May be used to search through the text, display, code and code/codesystem (for codes) and label, system and key (for identifier). Its value is either a string or a pair of namespace and value, separated by a &quot;|&quot;, depending on the modifier used.</td></tr><tr><td style="white-space:nowrap">reference<a name="search-param-type-reference"> </a></td><td>Reference</td><td>A reference to another resource (Reference or canonical).</td></tr><tr><td style="white-space:nowrap">composite<a name="search-param-type-composite"> </a></td><td>Composite</td><td>A composite search parameter that combines a search on two values together.</td></tr><tr><td style="white-space:nowrap">quantity<a name="search-param-type-quantity"> </a></td><td>Quantity</td><td>A search parameter that searches on a quantity.</td></tr><tr><td style="white-space:nowrap">uri<a name="search-param-type-uri"> </a></td><td>URI</td><td>A search parameter that searches on a URI (RFC 3986).</td></tr><tr><td style="white-space:nowrap">special<a name="search-param-type-special"> </a></td><td>Special</td><td>Special logic applies to this parameter per the description of the search parameter.</td></tr><tr><td style="white-space:nowrap">resource<a name="search-param-type-resource"> </a></td><td>Resource</td><td>A search parameter defined to chain through into embedded resources.</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-normative-version"><valueCode value="4.0.0"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"><valueInteger value="5"/></extension><url value="http://hl7.org/fhir/search-param-type"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.12"/></identifier><version value="6.0.0-ballot4"/><name value="SearchParamType"/><title value="SearchParamType"/><status value="active"/><experimental value="false"/><date value="2026-04-03T20:06:10+00:00"/><publisher value="HL7 International / FHIR Infrastructure"/><contact><telecom><system value="url"/><value value="http://www.hl7.org/Special/committees/fiwg"/></telecom></contact><description value="Data types allowed to be used for search parameters."/><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-param-type"/><content value="complete"/><concept><code value="number"/><display value="Number"/><definition value="Search parameter SHALL be a number (a whole number, or a decimal)."/></concept><concept><code value="date"/><display value="Date/DateTime"/><definition value="Search parameter is on a date/time. The date format is the standard XML format, though other formats may be supported."/></concept><concept><code value="string"/><display value="String"/><definition value="Search parameter is a simple string, like a name part. Search is case-insensitive and accent-insensitive. May match just the start of a string. String parameters may contain spaces."/></concept><concept><code value="token"/><display value="Token"/><definition value="Search parameter on a coded element or identifier. May be used to search through the text, display, code and code/codesystem (for codes) and label, system and key (for identifier). Its value is either a string or a pair of namespace and value, separated by a &quot;|&quot;, depending on the modifier used."/></concept><concept><code value="reference"/><display value="Reference"/><definition value="A reference to another resource (Reference or canonical)."/></concept><concept><code value="composite"/><display value="Composite"/><definition value="A composite search parameter that combines a search on two values together."/></concept><concept><code value="quantity"/><display value="Quantity"/><definition value="A search parameter that searches on a quantity."/></concept><concept><code value="uri"/><display value="URI"/><definition value="A search parameter that searches on a URI (RFC 3986)."/></concept><concept><code value="special"/><display value="Special"/><definition value="Special logic applies to this parameter per the description of the search parameter."/></concept><concept><code value="resource"/><display value="Resource"/><definition value="A search parameter defined to chain through into embedded resources."/></concept></CodeSystem>