HL7® FHIR® New Zealand Base Implementation Guide
3.1.0 - Draft

HL7® FHIR® New Zealand Base Implementation Guide, published by HL7 New Zealand. This guide is not an authorized publication; it is the continuous build for version 3.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/daniel-thomson/nzbase/ and changes regularly. See the Directory of published versions

## Extension: Established

Official URL: http://hl7.org.nz/fhir/StructureDefinition/established | Version: 1.0.0
Active as of 2026-05-21 | Computable Name: Established

The period over which the location or Organization is open

Context of Use

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

- Element ID: `Location`
- Element ID: `Organization`

Example of extension

    <Location xmlns="http://hl7.org/fhir">
     ...
      <extension url="http://hl7.org.nz/fhir/StructureDefinition/established">
        <valuePeriod>
          <start value="2010-01-01"/>
        </valuePeriod>
      </extension>
      <name value="Daves health centre"/>
      <alias value="Best health"/>
      ...
    </Location>

Example instances

Location with established

Usage info

Usages:

- Use this Extension: Location resource for use in NZ and Organization resource for use in NZ
- Examples for this Extension: Daves health 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 | Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://hl7.org.nz/fhir/StructureDefinition/established"
value[x] |  | 0..1 | Period | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | 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 | "http://hl7.org.nz/fhir/StructureDefinition/established"
value[x] |  | 0..1 | Period | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Period: The period over which the location or Organization is open

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://hl7.org.nz/fhir/StructureDefinition/established"
value[x] |  | 0..1 | Period | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | 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 | "http://hl7.org.nz/fhir/StructureDefinition/established"
value[x] |  | 0..1 | Period | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Period: The period over which the location or Organization is open

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()`