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Using Codes Code Systems Value Sets Concept Maps Identifier Systems

4.3.14.112 4.3.2.188 Code System CodeSystem http://hl7.org/fhir/namingsystem-identifier-type

  Maturity Level : 1
FHIR Responsible Owner: Terminology Infrastructure icon Work Group Trial Use Normative Use Context : Any Country: World
This is a code system defined by the FHIR project. Summary
  • Defining URL: Narrative http://hl7.org/fhir/namingsystem-identifier-type
  • XML Version:
  • 4.0.1 JSON
  • Name: TTL NamingSystemIdentifierType
Committee:
Official URL : Title: http://hl7.org/fhir/namingsystem-identifier-type NamingSystemIdentifierType Definition: Identifies the style of unique identifier used to identify a namespace. Version : 6.0.0-ballot3
active as of 2023-01-26 FHIR Infrastructure Computable Name : NamingSystemIdentifierType Work Group
OID: 2.16.840.1.113883.4.642.4.493 (for OID based terminology systems) Flags : CaseSensitive, Complete. All codes ValueSet: Naming System Identifier Type Source Resource XML / JSON OID : 2.16.840.1.113883.4.642.4.493

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

4.3.14.112.1 4.3.2.188.1 Content Definition

Identifies the style of unique identifier used to identify a namespace.

4.3.14.112.2 4.3.2.188.2 NamingSystemIdentifierType Content

Identifies the style of unique identifier used to identify a namespace.

Generated Narrative: CodeSystem namingsystem-identifier-type

Last updated: 2025-12-17T09:50:17.012Z

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

Code Display Definition Copy
oid OID

An ISO object identifier; e.g. 1.2.3.4.5.

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uuid UUID

A universally unique identifier of the form a5afddf4-e880-459b-876e-e4591b0acc11.

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uri URI

A uniform resource identifier (ideally a URL - uniform resource locator); e.g. http://unitsofmeasure.org.

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iri-stem IRI stem

An IRI string that can be prepended to the code to obtain a concept IRI for RDF applications. This should be a valid, absolute IRI as defined in RFC 3987. See the RDF spec for details on how this value may be used.

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v2csmnemonic V2CSMNemonic

A short string published by HL7 for use in the V2 family of standsrds to idenfify a code system in the V12 coded data types CWE, CNE, and CF. The code values are also published by HL7 at http://www.hl7.org/Special/committees/vocab/table_0396/index.cfm

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other Other

Some other type of unique identifier; e.g. HL7-assigned reserved string such as LN for LOINC.

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See the full registry of 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. 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