This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions icon CodeSystem http://hl7.org/fhir/search-param-type

FHIR Infrastructure icon Work Group Maturity Level: NNormative (from v4.0.0) Use Context: Country: World
Official URL: http://hl7.org/fhir/search-param-type Version: 6.0.0-cibuild
active as of 2024-05-14 Computable Name: SearchParamType
Flags: CaseSensitive, Complete. All codes ValueSet: SearchParamType OID: 2.16.840.1.113883.4.642.4.12

This Code system is used in the following value sets:

  • ValueSet: SearchParamType (Data types allowed to be used for search parameters.)

Data types allowed to be used for search parameters.

This case-sensitive code system http://hl7.org/fhir/search-param-type defines the following codes:

number NumberSearch parameter SHALL be a number (a whole number, or a decimal).btn btn
date Date/DateTimeSearch parameter is on a date/time. The date format is the standard XML format, though other formats may be supported.btn btn
string StringSearch 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.btn btn
token TokenSearch 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 "|", depending on the modifier used.btn btn
reference ReferenceA reference to another resource (Reference or canonical).btn btn
composite CompositeA composite search parameter that combines a search on two values together.btn btn
quantity QuantityA search parameter that searches on a quantity.btn btn
uri URIA search parameter that searches on a URI (RFC 3986).btn btn
special SpecialSpecial logic applies to this parameter per the description of the search parameter.btn btn


See the full registry of code systems defined as part of FHIR.

Explanation of the columns that may appear on this page:

LevelA few code lists that FHIR defines are hierarchical - each code is assigned a level. See Code System for further information.
SourceThe source of the definition of the code (when the value set draws in codes defined elsewhere)
CodeThe code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')
DisplayThe display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
DefinitionAn explanation of the meaning of the concept
CommentsAdditional notes about how to use the code