This page is part of the FHIR Specification v6.0.0-ballot3: Release 6 Ballot (3rd Draft) (see Ballot Notes). The current version is 5.0.0. For a full list of available versions, see the Directory of published versions

4.4.1.90 ValueSet http://hl7.org/fhir/ValueSet/age-units

FHIR Infrastructure Work Group

Maturity Level: 5

Trial Use

Use Context: Country: World

• Narrative
• XML
• JSON
• TTL

Official URL: http://hl7.org/fhir/ValueSet/age-units				Version: 6.0.0-ballot3
draft as of 2025-04-01				Computable Name: CommonUCUMCodesForAge
Flags:				OID: 2.16.840.1.113883.4.642.3.19

This value set is used in the following places:

• Datatype: Age (Quantity / Extensible)

4.4.1.90.1 Definition

Unified Code for Units of Measure (UCUM). This value set includes all common UCUM codes used for Age - that it is, all commonly used units which have the same canonical unit as 'a' (year)

4.4.1.90.2 Content Logical Definition

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4.4.1.90.3 Expansion

This expansion generated 01 Apr 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:

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