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4.4.1.120 ValueSet http://hl7.org/fhir/ValueSet/filter-operator

Responsible Owner: Terminology Infrastructure icon Work Group Normative Use Context: Country: World
Official URL: http://hl7.org/fhir/ValueSet/filter-operator Version: 6.0.0-ballot3
active as of 2020-12-28 Computable Name: FilterOperator
Flags: Immutable OID: 2.16.840.1.113883.4.642.3.478

This value set is used in the following places:

4.4.1.120.1 Definition

The kind of operation to perform as a part of a property based filter.

4.4.1.120.2 Content Logical Definition

Generated Narrative: ValueSet filter-operator

Last updated: 2025-11-20T23:56:49.898Z

 

4.4.1.120.3 Expansion

This expansion generated 20 Nov 2025

ValueSet

Expansion performed internally based on codesystem Filter Operator v6.0.0-ballot3 (CodeSystem)

This value set contains 11 concepts

SystemCodeDisplayDefinition
http://hl7.org/fhir/filter-operator   = Equals The specified property of the code equals the provided value.
http://hl7.org/fhir/filter-operator   is-a Is A (by subsumption) Includes all concept ids that have a transitive is-a relationship with the concept Id provided as the value, including the provided concept itself (include descendant codes and self).
http://hl7.org/fhir/filter-operator   descendent-of Descendent Of (by subsumption) Includes all concept ids that have a transitive is-a relationship with the concept Id provided as the value, excluding the provided concept itself (i.e. include descendant codes only).
http://hl7.org/fhir/filter-operator   is-not-a Not (Is A) (by subsumption) The specified property of the code does not have an is-a relationship with the provided value.
http://hl7.org/fhir/filter-operator   regex Regular Expression The specified property of the code matches the regex specified in the provided value.
http://hl7.org/fhir/filter-operator   in In Set The specified property of the code is in the set of codes or concepts specified in the provided value (comma-separated list).
http://hl7.org/fhir/filter-operator   not-in Not in Set The specified property of the code is not in the set of codes or concepts specified in the provided value (comma-separated list).
http://hl7.org/fhir/filter-operator   generalizes Generalizes (by Subsumption) Includes all concept ids that have a transitive is-a relationship from the concept Id provided as the value, including the provided concept itself (i.e. include ancestor codes and self).
http://hl7.org/fhir/filter-operator   child-of Child Of Only concepts with a direct hierarchical relationship to the index code and no other concepts. This does not include the index code in the output.
http://hl7.org/fhir/filter-operator   descendent-leaf Descendent Leaf Includes concept ids that have a transitive is-a relationship with the concept Id provided as the value, but which do not have any concept ids with transitive is-a relationships with themselves.
http://hl7.org/fhir/filter-operator   exists Exists The specified property of the code has at least one value (if the specified value is true; if the specified value is false, then matches when the specified property of the code has no values).

 

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

Explanation of the columns that may appear on this page:

Lvl A few code lists that FHIR defines are hierarchical - each code is assigned a level. For value sets, levels are mostly used to organize codes for user convenience, but may follow code system hierarchy - see Code System for further information
Source The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')
Display The 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
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code