HL7 FHIR Implementation Guide - New Zealand Formulary/NZULM IG, published by New Zealand Medicines Formulary LP. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7NZ/nzf/ and changes regularly. See the Directory of published versions
Extension: IsPrimary
| Official URL: http://hl7.org.nz/fhir/StructureDefinition/nzf-is-primary-coding | Version: 1.0.0 | |||
| Draft as of 2025-07-22 | Computable Name: IsPrimary | |||
Is primary code within given context, e.g. primary Pharmacode® when multiple given
Context of Use
-
Element ID:
Coding
This extension may be used on the following element(s)
Usage info
Usages:
- Use this Extension: Coding resource for NZ Formulary
- Examples for this Extension: Medication/50000391000117104, Medication/50079341000117105 and Medication/ctpp-with-funding
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.
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..* | Extension | Extension | |
  id |
0..1 | id | Unique id for inter-element referencing | |
 extension |
0..0 | |||
| url |
1..1 | uri | "http://hl7.org.nz/fhir/StructureDefinition/nzf-is-primary-coding" | |
 value[x] |
0..1 | boolean | Value of extension | |
| Documentation for this format | ||||
This structure is derived from Extension
Differential View
This structure is derived from Extension
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Extension | |
| id |
0..1 | id | Unique id for inter-element referencing | |
| extension |
0..0 | |||
| url |
1..1 | uri | "http://hl7.org.nz/fhir/StructureDefinition/nzf-is-primary-coding" | |
| value[x] |
0..1 | boolean | Value of extension | |
| Documentation for this format | ||||
This structure is derived from Extension
Other representations of profile: CSV, Excel, Schematron
Constraints
| Id | Grade | Path(s) | Details | Requirements |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children unless an empty Parameters resource : hasValue() or (children().count() > id.count()) or $this is Parameters | |
| ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both : extension.exists() != value.exists() |