This page is part of the FHIR Specification v4.1.0: R4B Ballot. About the R4B version of FHIR. The current version which supercedes this version is 5.0.0.  For a full list of available versions, see the Directory of published versions  . Page versions: R5 R4B R4 R3 R2
. Page versions: R5 R4B R4 R3 R2
| FHIR Infrastructure  Work Group | Maturity Level: 2 | Trial Use | Use Context: Any | 
This is a value set defined by the FHIR project.
Summary
| Defining URL: | http://hl7.org/fhir/ValueSet/namingsystem-identifier-type | 
| Version: | 4.1.0 | 
| Name: | NamingSystemIdentifierType | 
| Title: | NamingSystemIdentifierType | 
| Definition: | Identifies the style of unique identifier used to identify a namespace. | 
| Committee: | FHIR Infrastructure  Work Group | 
| OID: | 2.16.840.1.113883.4.642.3.492 (for OID based terminology systems) | 
| Source Resource | XML / JSON | 
This value set is used in the following places:
http://hl7.org/fhir/namingsystem-identifier-type
This expansion generated 11 Mar 2021
This value set contains 4 concepts
Expansion based on NamingSystemIdentifierType v4.1.0 (CodeSystem)
All codes from system http://hl7.org/fhir/namingsystem-identifier-type
| Code | Display | Definition | 
| oid | OID | An ISO object identifier; e.g. 1.2.3.4.5. | 
| uuid | UUID | A universally unique identifier of the form a5afddf4-e880-459b-876e-e4591b0acc11. | 
| uri | URI | A uniform resource identifier (ideally a URL - uniform resource locator); e.g. http://unitsofmeasure.org. | 
| other | Other | Some other type of unique identifier; e.g. HL7-assigned reserved string such as LN for LOINC. | 
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 |