Aotearoa Immunisation Register (AIR) FHIR Implementation Guide
2.7.0 - ci-build New Zealand

Aotearoa Immunisation Register (AIR) FHIR Implementation Guide - Local Development build (v2.7.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

Extension: AIR Age Given Extension

Official URL: https://standards.digital.health.nz/fhir/air/StructureDefinition/air-age-given Version: 2.7.0
Active as of 2026-07-20 Computable Name: AIRAgeGiven

This extension calculates the patient age when a vaccination was administered. Although this could be calculated by the client based on patient date of birth, it is provided as a convenience.

Context of Use

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

Usage info

Usages:

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

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension AIR Age Given Extension
... Slices for extension Content/Rules for all slices
.... extension:years 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "years"
..... value[x] 0..1 integer Value of extension
.... extension:months 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "months"
..... value[x] 0..1 integer Value of extension
.... extension:days 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "days"
..... value[x] 0..1 integer Value of extension
.... extension:daysSinceBirth 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "daysSinceBirth"
..... value[x] 0..1 integer Value of extension
.... extension:precision 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "precision"
..... value[x] 0..1 string Value of extension
... url 1..1 uri "https://standards.digital.health.nz/fhir/air/StructureDefinition/air-age-given"
... value[x] 0..0 Value of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension AIR Age Given Extension
... id 0..1 string Unique id for inter-element referencing
... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... extension:years 0..1 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 "years"
..... value[x] 0..1 integer Value of extension
.... extension:months 0..1 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 "months"
..... value[x] 0..1 integer Value of extension
.... extension:days 0..1 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 "days"
..... value[x] 0..1 integer Value of extension
.... extension:daysSinceBirth 0..1 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 "daysSinceBirth"
..... value[x] 0..1 integer Value of extension
.... extension:precision 0..1 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 "precision"
..... value[x] 0..1 string Value of extension
... url 1..1 uri "https://standards.digital.health.nz/fhir/air/StructureDefinition/air-age-given"

doco Documentation for this format

This structure is derived from Extension

Summary

Complex Extension: This extension calculates the patient age when a vaccination was administered. Although this could be calculated by the client based on patient date of birth, it is provided as a convenience.

  • years: integer: An Extension
  • months: integer: An Extension
  • days: integer: An Extension
  • daysSinceBirth: integer: An Extension
  • precision: string: An Extension

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension AIR Age Given Extension
... Slices for extension Content/Rules for all slices
.... extension:years 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "years"
..... value[x] 0..1 integer Value of extension
.... extension:months 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "months"
..... value[x] 0..1 integer Value of extension
.... extension:days 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "days"
..... value[x] 0..1 integer Value of extension
.... extension:daysSinceBirth 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "daysSinceBirth"
..... value[x] 0..1 integer Value of extension
.... extension:precision 0..1 Extension Extension
..... extension 0..0 Extension
..... url 1..1 uri "precision"
..... value[x] 0..1 string Value of extension
... url 1..1 uri "https://standards.digital.health.nz/fhir/air/StructureDefinition/air-age-given"
... value[x] 0..0 Value of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension AIR Age Given Extension
... id 0..1 string Unique id for inter-element referencing
... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... extension:years 0..1 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 "years"
..... value[x] 0..1 integer Value of extension
.... extension:months 0..1 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 "months"
..... value[x] 0..1 integer Value of extension
.... extension:days 0..1 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 "days"
..... value[x] 0..1 integer Value of extension
.... extension:daysSinceBirth 0..1 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 "daysSinceBirth"
..... value[x] 0..1 integer Value of extension
.... extension:precision 0..1 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 "precision"
..... value[x] 0..1 string Value of extension
... url 1..1 uri "https://standards.digital.health.nz/fhir/air/StructureDefinition/air-age-given"

doco Documentation for this format

This structure is derived from Extension

Summary

Complex Extension: This extension calculates the patient age when a vaccination was administered. Although this could be calculated by the client based on patient date of birth, it is provided as a convenience.

  • years: integer: An Extension
  • months: integer: An Extension
  • days: integer: An Extension
  • daysSinceBirth: integer: An Extension
  • precision: string: An Extension

 

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()