This page is part of the FHIR Specification (v3.0.2: STU 3). The current version which supercedes this version is 5.0.0 . For a full list Continuous Integration Build of available versions, see FHIR (will be incorrect/inconsistent at times).
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Using Codes Code Systems Value Sets Concept Maps Identifier Systems

4.3.1.777 4.4.1.273 Value Set ValueSet http://hl7.org/fhir/ValueSet/definition-topic

  Maturity Level : 1

Clinical Decision Support Responsible Owner: Terminology Infrastructure Work Group

Informative

Use Context : Any Country: World

This is a value set defined by the FHIR project. Summary

• Defining URL: Narrative http://hl7.org/fhir/ValueSet/definition-topic
• XML Name:
• DefinitionTopic JSON
• Definition: TTL High-level categorization of the definition, used for searching, sorting, and filtering

OID:

Official URL : Committee: http://hl7.org/fhir/ValueSet/definition-topic Clinical Decision Support Work Group				Version : 6.0.0-ballot3
active as of 2020-12-28				2.16.840.1.113883.4.642.3.777 (for OID based terminology systems) Computable Name : DefinitionTopic
Source Resource Flags : Immutable				XML / JSON OID : 2.16.840.1.113883.4.642.3.794

This value set is used in the following places:

• This value set is the designated 'entire code system' value set for DefinitionTopic Interface: MetadataResource.topic (CodeableConcept / Example )
• Measure.topic Resource: EventDefinition.topic ( (CodeableConcept / Example )
• ServiceDefinition.topic Resource: Measure.topic ( (CodeableConcept / Example )
• Resource: ActivityDefinition.topic ( (CodeableConcept / Example )
• Resource: ConceptMap.topic (CodeableConcept / Example )
• Resource: ValueSet.topic (CodeableConcept / Example )
• Resource: CodeSystem.topic (CodeableConcept / Example )
• Resource: Library.topic ( (CodeableConcept / Example )
• Resource: NamingSystem.topic (CodeableConcept / Example )
• Resource: PlanDefinition.topic ( (CodeableConcept / Example )
• Extension: http://hl7.org/fhir/StructureDefinition/artifact-topic: ArtifactTopic (CodeableConcept / Example )

4.3.1.777.1 4.4.1.273.1 Definition

High-level categorization of the definition, used for searching, sorting, and filtering.

4.4.1.273.2 Content Logical Definition

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4.3.1.777.2 4.4.1.273.3 Expansion

This expansion generated 19 Apr 2017 17 Dec 2025

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

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Explanation of the columns that may appear on this page:

Level Lvl	A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes For value sets, levels are under other codes, and imply that the mostly used to organize codes for user convenience, but may follow code they are under also applies 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