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Using Codes Code Systems Value Sets Concept Maps Identifier Systems

4.2.12.53 4.3.2.35 Code System CodeSystem http://hl7.org/fhir/identifier-use

  Maturity Level : 0
Vocabulary Responsible Owner: FHIR Infrastructure icon Work Group Informative Normative Use Context : Any Country: World
This is a code system defined by the FHIR project. Summary
  • Defining URL: Narrative http://hl7.org/fhir/identifier-use
  • XML Name:
  • IdentifierUse JSON
  • Definition: TTL Identifies the purpose for this identifier, if known .
OID:
Official URL : Committee: http://hl7.org/fhir/identifier-use Work Group Version : 6.0.0-ballot3
active as of 2025-11-24 2.16.840.1.113883.4.642.1.53 (for OID based terminology systems) Computable Name : IdentifierUse Source Resource
XML / JSON Flags : CaseSensitive, Complete. All codes ValueSet: IdentifierUse OID : 2.16.840.1.113883.4.642.1.58

This Code system is used in the following FHIR core-defined or referenced value sets:

  • ValueSet: IdentifierUse (Identifies the purpose for this identifier, if known .)

4.2.12.53.1 4.3.2.35.1 Content Definition 4.2.12.53.2 IdentifierUse

Identifies the purpose for this identifier, if known .

4.3.2.35.2 Content

Generated Narrative: CodeSystem identifier-use

Last updated: 2025-11-24T20:46:00.1Z

This case-sensitive code system http://hl7.org/fhir/identifier-use defines the following codes:

Code Display Definition Copy
usual Usual The identifier recommended for display and use in real-world interactions. interactions which should be used when such identifier is different from the "official" identifier. btn   btn
official Official The identifier considered to be most trusted for the identification of this item. Sometimes also known as "primary" and "main". The determination of "official" is subjective and implementation guides often provide additional guidelines for use. btn   btn
temp Temp A temporary identifier. btn   btn
secondary Secondary An identifier that was assigned in secondary use - it serves to identify the object in a relative context, but cannot be consistently assigned to the same object again in a different context. btn   btn
old Old The identifier id no longer considered valid, but may be relevant for search purposes. E.g. Changes to identifier schemes, account merges, etc. btn   btn

 

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

Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies 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