Open Health Hub FHIR Implementation Guide - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
Extension: ISO-8601 Duration Extension
| Official URL: https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/iso-8601-duration | Version: 0.1.0 | |||
| Active as of 2025-12-03 | Computable Name: ISO8601DurationType | |||
Extension representing the duration in the ISO-8601 format
Context of Use
This extension may be used on the following element(s):
- Element ID Duration
Usage info
Usages:
- Use this Extension: OHH Plan Definition Profile
- Examples for this Extension: Test_PlanDefinition
You can also check for usages in the FHIR IG Statistics
Formal Views of Extension Content
Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.
This structure is derived from Extension
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..* | Extension | ISO-8601 Duration Extension | |
  extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/iso-8601-duration" | |
  value[x] |
C | 1..1 | string | Value of extension Constraints: iso-8601-duration-criteria |
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | ISO-8601 Duration Extension | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/iso-8601-duration" | |
| value[x] |
C | 1..1 | string | Value of extension Constraints: iso-8601-duration-criteria |
| Documentation for this format | ||||
This structure is derived from Extension
Differential View
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | ISO-8601 Duration Extension | |
| extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/iso-8601-duration" | |
| value[x] |
C | 1..1 | string | Value of extension Constraints: iso-8601-duration-criteria |
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | ISO-8601 Duration Extension | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/iso-8601-duration" | |
| value[x] |
C | 1..1 | string | Value of extension Constraints: iso-8601-duration-criteria |
| Documentation for this format | ||||
Other representations of profile: CSV, Excel, Schematron
Constraints
| Id | Grade | Path(s) | Description | Expression |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children |
hasValue() or (children().count() > id.count())
|
| ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both |
extension.exists() != value.exists()
|
| iso-8601-duration-criteria | error | Extension.value[x] | ISO-8601 Duration format |
matches('^P(([0-9]+Y)?([0-9]+M)?([0-9]+W)?([0-9]+D)?(T([0-9]+H)?([0-9]+M)?([0-9]+(\\.?[0-9]+)?S)?))?$')
|