R4 Ballot #1 (Mixed Normative/Trial use)

This page is part of the FHIR Specification (v3.3.0: R4 Ballot 2). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3

4.2.13.640 Code System http://hl7.org/fhir/search-modifier-code

FHIR Infrastructure Work Group Maturity Level: 3Trial Use Use Context: Any

This is a code system defined by the FHIR project.

Summary

Defining URL:http://hl7.org/fhir/search-modifier-code
Name:SearchModifierCode
Definition:

A supported modifier for a search parameter.

Committee:FHIR Infrastructure Work Group
OID:2.16.840.1.113883.4.642.1.640 (for OID based terminology systems)
Source ResourceXML / JSON

This Code system is used in the following value sets:

4.2.13.640.1 Content

4.2.13.640.2 SearchModifierCode

A supported modifier for a search parameter.

This code system http://hl7.org/fhir/search-modifier-code defines the following codes:

CodeDisplayDefinition
missing MissingThe search parameter returns resources that have a value or not.
exact ExactThe search parameter returns resources that have a value that exactly matches the supplied parameter (the whole string, including casing and accents).
contains ContainsThe search parameter returns resources that include the supplied parameter value anywhere within the field being searched.
not NotThe search parameter returns resources that do not contain a match.
text TextThe 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 InThe 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 Not InThe 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 BelowThe search parameter tests whether the value in a resource is subsumed by the specified value (is-a, or hierarchical relationships).
above AboveThe search parameter tests whether the value in a resource subsumes the specified value (is-a, or hierarchical relationships).
type TypeThe search parameter only applies to the Resource Type specified as a modifier (e.g. the modifier is not actually :type, but :Patient etc.).

 

See the full registry of value sets defined as part of FHIR.

Explanation of the columns that may appear on this page:

LvlA 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