This page is part of the FHIR Specification (v5.0.0-snapshot3: R5 Snapshot #3, to support Connectathon 32). 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: N | Normative (from v4.0.0) | Use Context: Country: World, Country: World | 
| Official URL: http://hl7.org/fhir/ValueSet/units-of-time | Version: 5.0.0-snapshot3 | |||
| active as of 2022-12-14 | Computable Name: UnitsOfTime | |||
| Flags: | OID: 2.16.840.1.113883.4.642.3.77 | |||
This value set is used in the following places:
A unit of time (units from UCUM).
http://unitsofmeasure.org 
| Code | Display | Definition | 中文 (Chinese, zh) | 
| s | second | second | 秒 | 
| min | minute | minute | 分钟 | 
| h | hour | hour | 小时 | 
| d | day | day | 天 | 
| wk | week | week | 星期 | 
| mo | month | month - Normal practice is to use the 'mo' code as a calendar month when calculating the next occurrence. | 月 | 
| a | year | year | 年 | 
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 |