# Agency Common Components FHIR Implementation Guide

26.0.0 - Trial

Agency Common Components FHIR Implementation Guide, published by Australian Digital Health Agency. This guide is not an authorized publication; it is the continuous build for version 26.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/AuDigitalHealth/CC/ and changes regularly. See the Directory of published versions

## Extension: Active Period

Official URL: http://digitalhealth.gov.au/fhir/cc/StructureDefinition/active-period | Version: 26.0.0
Active as of 2026-06-16 | Computable Name: Active_Period
Usage:Jurisdiction: Australia
Copyright/Legal: Copyright © 2026 Australian Digital Health Agency - All rights reserved. This content is licensed under a Creative Commons Attribution 4.0 International License. See https://creativecommons.org/licenses/by/4.0/.

The period during which the HealthcareService is considered active.

This extension addresses the business need to specify time-bounded availability of healthcare services, enabling accurate representation of service offerings that may have specific active periods.

Context of Use

This extension may be used on the following element(s)

- Element ID: `HealthcareService`

Usage info

Usages:

- Examples for this Extension: Dame Edna's Gladiolus Therapy Centre

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.

- Differential Table
- Snapshot Table
- Statistics/References
- All

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Active Period
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/active-period"
value[x] |  | 0..1 | Period | The period during which the HealthcareService is active.
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Active Period Constraints: ext-1
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url Constraints: ext-1
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/active-period"
value[x] |  | 0..1 | Period | The period during which the HealthcareService is active.
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Period: The period during which the HealthcareService is considered active.

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Active Period
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/active-period"
value[x] |  | 0..1 | Period | The period during which the HealthcareService is active.
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension(4.0.1) | Active Period Constraints: ext-1
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url Constraints: ext-1
url |  | 1..1 | uri | "http://digitalhealth.gov.au/fhir/cc/StructureDefinition/active-period"
value[x] |  | 0..1 | Period | The period during which the HealthcareService is active.
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Period: The period during which the HealthcareService is considered active.

Other representations of profile: CSV, Excel, Schematron

#### Constraints

Id | Grade | Path(s) | Description | Expression
ele-1 | error | Extension, Extension.value[x] | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | Extension | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`