Aotearoa Immunisation Register (AIR) FHIR Implementation Guide
2.1.0 - release New Zealand

Aotearoa Immunisation Register (AIR) FHIR Implementation Guide - Local Development build (v2.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

## Resource Profile: AIR Message Header

Official URL: https://standards.digital.health.nz/fhir/air/StructureDefinition/air-message-header | Version: 2.1.0
Active as of 2026-07-21 | Computable Name: AIRMessageHeader

This profile derived from MessageHeader implements extensions to message header required for Immunisation event messaging.

Usages:

- This Profile is not used by any profiles in this Specification

You can also check for usages in the FHIR IG Statistics

### Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

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

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MessageHeader |  | 0..* | MessageHeader | A resource that describes a message that is exchanged between systems
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:ImmunisationNotificationAction |  | 0..1 | Coding | Indicates to which parties the Immunisation Notification message should be sent URL: http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action Binding: https://standards.digital.health.nz/ns/air-immunisation-notification-action-code (required)
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
event[x] | Σ | 1..1 |  | Code for the event this message represents or link to event definition Binding: MessageEvent (example): One of the message events defined as part of this version of FHIR.
eventCoding |  |  | Coding |
eventUri |  |  | uri |
source | Σ | 1..1 | BackboneElement | Message source application
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
endpoint | Σ | 1..1 | url | Actual message source address or id
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MessageHeader.event[x] | Base | example | MessageEvent | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MessageHeader | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MessageHeader | If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MessageHeader | A resource should have narrative for robust management | `text.`div`.exists()`
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()`

This structure is derived from MessageHeader

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MessageHeader |  | 0..* | MessageHeader | A resource that describes a message that is exchanged between systems
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:ImmunisationNotificationAction |  | 0..1 | Coding | Indicates to which parties the Immunisation Notification message should be sent URL: http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action Binding: https://standards.digital.health.nz/ns/air-immunisation-notification-action-code (required)
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MessageHeader |  | 0..* | MessageHeader | A resource that describes a message that is exchanged between systems
id | Σ | 0..1 | id | Logical id of this artifact
meta | Σ | 0..1 | Meta | Metadata about the resource
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
language |  | 0..1 | code | Language of the resource content Binding: CommonLanguages (preferred): A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
text |  | 0..1 | Narrative | Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained |  | 0..* | Resource | Contained, inline Resources
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:ImmunisationNotificationAction |  | 0..1 | Coding | Indicates to which parties the Immunisation Notification message should be sent URL: http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action Binding: https://standards.digital.health.nz/ns/air-immunisation-notification-action-code (required)
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
event[x] | Σ | 1..1 |  | Code for the event this message represents or link to event definition Binding: MessageEvent (example): One of the message events defined as part of this version of FHIR.
eventCoding |  |  | Coding |
eventUri |  |  | uri |
destination | Σ | 0..* | BackboneElement | Message destination application(s)
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
name | Σ | 0..1 | string | Name of system
target | Σ | 0..1 | Reference(Device) | Particular delivery destination within the destination
endpoint | Σ | 1..1 | url | Actual destination address or id
receiver | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization) | Intended "real-world" recipient for the data
sender | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization) | Real world sender of the message
enterer | Σ | 0..1 | Reference(Practitioner | PractitionerRole) | The source of the data entry
author | Σ | 0..1 | Reference(Practitioner | PractitionerRole) | The source of the decision
source | Σ | 1..1 | BackboneElement | Message source application
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
name | Σ | 0..1 | string | Name of system
software | Σ | 0..1 | string | Name of software running the system
version | Σ | 0..1 | string | Version of software running
contact | Σ | 0..1 | ContactPoint | Human contact for problems
endpoint | Σ | 1..1 | url | Actual message source address or id
responsible | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization) | Final responsibility for event
reason | Σ | 0..1 | CodeableConcept | Cause of event Binding: ExampleMessageReasonCodes (example): Reason for event occurrence.
response | Σ | 0..1 | BackboneElement | If this is a reply to prior message
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
identifier | Σ | 1..1 | id | Id of original message
code | Σ | 1..1 | code | ok | transient-error | fatal-error Binding: ResponseType (required): The kind of response to a message.
details | Σ | 0..1 | Reference(OperationOutcome) | Specific list of hints/warnings/errors
focus | Σ | 0..* | Reference(Resource) | The actual content of the message
definition | Σ | 0..1 | canonical(MessageDefinition) | Link to the definition for this message
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MessageHeader.language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
MessageHeader.event[x] | Base | example | MessageEvent | 📍4.0.1 | FHIR Std.
MessageHeader.reason | Base | example | Example Message Reason Codes | 📍4.0.1 | FHIR Std.
MessageHeader.response.​code | Base | required | ResponseType | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MessageHeader | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MessageHeader | If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MessageHeader | A resource should have narrative for robust management | `text.`div`.exists()`
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()`

This structure is derived from MessageHeader

Summary

Extensions

This structure refers to these extensions:

- http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MessageHeader |  | 0..* | MessageHeader | A resource that describes a message that is exchanged between systems
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:ImmunisationNotificationAction |  | 0..1 | Coding | Indicates to which parties the Immunisation Notification message should be sent URL: http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action Binding: https://standards.digital.health.nz/ns/air-immunisation-notification-action-code (required)
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
event[x] | Σ | 1..1 |  | Code for the event this message represents or link to event definition Binding: MessageEvent (example): One of the message events defined as part of this version of FHIR.
eventCoding |  |  | Coding |
eventUri |  |  | uri |
source | Σ | 1..1 | BackboneElement | Message source application
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
endpoint | Σ | 1..1 | url | Actual message source address or id
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MessageHeader.event[x] | Base | example | MessageEvent | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MessageHeader | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MessageHeader | If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MessageHeader | A resource should have narrative for robust management | `text.`div`.exists()`
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()`

Differential View

This structure is derived from MessageHeader

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MessageHeader |  | 0..* | MessageHeader | A resource that describes a message that is exchanged between systems
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:ImmunisationNotificationAction |  | 0..1 | Coding | Indicates to which parties the Immunisation Notification message should be sent URL: http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action Binding: https://standards.digital.health.nz/ns/air-immunisation-notification-action-code (required)
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MessageHeader |  | 0..* | MessageHeader | A resource that describes a message that is exchanged between systems
id | Σ | 0..1 | id | Logical id of this artifact
meta | Σ | 0..1 | Meta | Metadata about the resource
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
language |  | 0..1 | code | Language of the resource content Binding: CommonLanguages (preferred): A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
text |  | 0..1 | Narrative | Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained |  | 0..* | Resource | Contained, inline Resources
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:ImmunisationNotificationAction |  | 0..1 | Coding | Indicates to which parties the Immunisation Notification message should be sent URL: http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action Binding: https://standards.digital.health.nz/ns/air-immunisation-notification-action-code (required)
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
event[x] | Σ | 1..1 |  | Code for the event this message represents or link to event definition Binding: MessageEvent (example): One of the message events defined as part of this version of FHIR.
eventCoding |  |  | Coding |
eventUri |  |  | uri |
destination | Σ | 0..* | BackboneElement | Message destination application(s)
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
name | Σ | 0..1 | string | Name of system
target | Σ | 0..1 | Reference(Device) | Particular delivery destination within the destination
endpoint | Σ | 1..1 | url | Actual destination address or id
receiver | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization) | Intended "real-world" recipient for the data
sender | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization) | Real world sender of the message
enterer | Σ | 0..1 | Reference(Practitioner | PractitionerRole) | The source of the data entry
author | Σ | 0..1 | Reference(Practitioner | PractitionerRole) | The source of the decision
source | Σ | 1..1 | BackboneElement | Message source application
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
name | Σ | 0..1 | string | Name of system
software | Σ | 0..1 | string | Name of software running the system
version | Σ | 0..1 | string | Version of software running
contact | Σ | 0..1 | ContactPoint | Human contact for problems
endpoint | Σ | 1..1 | url | Actual message source address or id
responsible | Σ | 0..1 | Reference(Practitioner | PractitionerRole | Organization) | Final responsibility for event
reason | Σ | 0..1 | CodeableConcept | Cause of event Binding: ExampleMessageReasonCodes (example): Reason for event occurrence.
response | Σ | 0..1 | BackboneElement | If this is a reply to prior message
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
identifier | Σ | 1..1 | id | Id of original message
code | Σ | 1..1 | code | ok | transient-error | fatal-error Binding: ResponseType (required): The kind of response to a message.
details | Σ | 0..1 | Reference(OperationOutcome) | Specific list of hints/warnings/errors
focus | Σ | 0..* | Reference(Resource) | The actual content of the message
definition | Σ | 0..1 | canonical(MessageDefinition) | Link to the definition for this message
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MessageHeader.language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
MessageHeader.event[x] | Base | example | MessageEvent | 📍4.0.1 | FHIR Std.
MessageHeader.reason | Base | example | Example Message Reason Codes | 📍4.0.1 | FHIR Std.
MessageHeader.response.​code | Base | required | ResponseType | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MessageHeader | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MessageHeader | If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | MessageHeader | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MessageHeader | A resource should have narrative for robust management | `text.`div`.exists()`
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()`

This structure is derived from MessageHeader

Summary

Extensions

This structure refers to these extensions:

- http://hl7.org.nz/fhir/StructureDefinition/air-immunisation-notification-action

Other representations of profile: CSV, Excel, Schematron