R4 Ballot #1 (Mixed Normative/Trial use) Current Build
This page was published as part of FHIR v3.3.0: R4 Ballot #1 : Mixed Normative/Trial use (First Normative ballot). It has been superceded by R4 . For a full list of available versions, see the Directory of published versions . Code System http://hl7.org/fhir/identifier-use

FHIR Infrastructure Work Group   Maturity Level : 0 N Draft Normative (from v4.0.0) Use Context : Any

This is a code system defined by the FHIR project.


Defining URL: http://hl7.org/fhir/identifier-use
Version: 4.1.0
Name: IdentifierUse
Title: IdentifierUse

Identifies the purpose for this identifier, if known .

Committee: FHIR Infrastructure Work Group
OID: 2.16.840.1.113883.4.642.1.58 (for OID based terminology systems)
Source Resource XML / JSON

This Code system is used in the following value sets:

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

Identifies the purpose for this identifier, if known .

This code system http://hl7.org/fhir/identifier-use defines the following codes:
Code Display Definition
usual Usual The identifier recommended for display and use in real-world interactions.
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.
temp Temp A temporary identifier.
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.
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.


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

Explanation of the columns that may appear on this page:

Lvl Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. 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