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

## Resource Profile: MedicationStatement resource for use in NZ

Official URL: http://hl7.org.nz/fhir/StructureDefinition/NzMedicationStatement | Version: 1.0.0
Draft as of 2026-03-12 | Computable Name: NzMedicationStatement

MedicationStatement resource for use in NZ

Usages:

- This Profile is not used by any profiles in this Implementation Guide

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
--- | --- | --- | --- | ---
MedicationStatement |  | 0..* | MedicationStatement | Record of medication being taken by a patient
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:nzeps-long-term-medication |  | 0..1 | boolean | NZePS Long Term Medication Indicator URL: http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
status | ?!Σ | 1..1 | code | active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken Binding: Medication Status Codes (required): A coded concept indicating the current status of a MedicationStatement.
Slices for medication[x] | Σ | 1..1 |  | What medication was taken Slice: Unordered, Open by type:$this Binding: SNOMEDCTMedicationCodes (example): A coded concept identifying the substance or product being taken.
medicationCodeableConcept |  |  | CodeableConcept |
medicationReference |  |  | Reference(Medication) |
medication[x]:medicationCodeableConcept | Σ | 0..1 | CodeableConcept | What medication was taken Binding: http://nzmt.org.nz/vs (preferred)
subject | Σ | 1..1 | Reference(Patient | Group) | Who is/was taking the medication
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MedicationStatement.​status | Base | required | Medication status codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x] | Base | example | SNOMED CT Medication Codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x]:medicationCodeableConcept | Base | preferred | http://nzmt.org.nz/vs | Not State | Unknown

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MedicationStatement | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MedicationStatement | 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 | MedicationStatement | 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 | MedicationStatement | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MedicationStatement | 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 MedicationStatement

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MedicationStatement |  | 0..* | MedicationStatement | Record of medication being taken by a patient
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:nzeps-long-term-medication |  | 0..1 | boolean | NZePS Long Term Medication Indicator URL: http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication
Slices for medication[x] |  | 1..1 | CodeableConcept, Reference(Medication) | What medication was taken Slice: Unordered, Open by type:$this
medication[x]:medicationCodeableConcept |  | 0..1 | CodeableConcept | What medication was taken Binding: http://nzmt.org.nz/vs (preferred)
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
MedicationStatement.​medication[x]:medicationCodeableConcept | Base | preferred | http://nzmt.org.nz/vs | Not State | Unknown

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MedicationStatement |  | 0..* | MedicationStatement | Record of medication being taken by a patient
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:nzeps-long-term-medication |  | 0..1 | boolean | NZePS Long Term Medication Indicator URL: http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
identifier | Σ | 0..* | Identifier | External identifier
basedOn | Σ | 0..* | Reference(MedicationRequest | CarePlan | ServiceRequest) | Fulfils plan, proposal or order
partOf | Σ | 0..* | Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Observation) | Part of referenced event
status | ?!Σ | 1..1 | code | active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken Binding: Medication Status Codes (required): A coded concept indicating the current status of a MedicationStatement.
statusReason |  | 0..* | CodeableConcept | Reason for current status Binding: SNOMEDCTDrugTherapyStatusCodes (example): A coded concept indicating the reason for the status of the statement.
category | Σ | 0..1 | CodeableConcept | Type of medication usage Binding: Medication usage category codes (preferred): A coded concept identifying where the medication included in the MedicationStatement is expected to be consumed or administered.
Slices for medication[x] | Σ | 1..1 |  | What medication was taken Slice: Unordered, Open by type:$this Binding: SNOMEDCTMedicationCodes (example): A coded concept identifying the substance or product being taken.
medicationCodeableConcept |  |  | CodeableConcept |
medicationReference |  |  | Reference(Medication) |
medication[x]:medicationCodeableConcept | Σ | 0..1 | CodeableConcept | What medication was taken Binding: http://nzmt.org.nz/vs (preferred)
subject | Σ | 1..1 | Reference(Patient | Group) | Who is/was taking the medication
context | Σ | 0..1 | Reference(Encounter | EpisodeOfCare) | Encounter / Episode associated with MedicationStatement
effective[x] | Σ | 0..1 |  | The date/time or interval when the medication is/was/will be taken
effectiveDateTime |  |  | dateTime |
effectivePeriod |  |  | Period |
dateAsserted | Σ | 0..1 | dateTime | When the statement was asserted?
informationSource |  | 0..1 | Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Organization) | Person or organization that provided the information about the taking of this medication
derivedFrom |  | 0..* | Reference(Resource) | Additional supporting information
reasonCode |  | 0..* | CodeableConcept | Reason for why the medication is being/was taken Binding: Condition/Problem/DiagnosisCodes (example): A coded concept identifying why the medication is being taken.
reasonReference |  | 0..* | Reference(Condition | Observation | DiagnosticReport) | Condition or observation that supports why the medication is being/was taken
note |  | 0..* | Annotation | Further information about the statement
dosage |  | 0..* | Dosage | Details of how medication is/was taken or should be taken
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MedicationStatement.​language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
MedicationStatement.​status | Base | required | Medication status codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​statusReason | Base | example | SNOMED CT Drug Therapy Status codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​category | Base | preferred | Medication usage category codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x] | Base | example | SNOMED CT Medication Codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x]:medicationCodeableConcept | Base | preferred | http://nzmt.org.nz/vs | Not State | Unknown
MedicationStatement.​reasonCode | Base | example | Condition/Problem/Diagnosis Codes | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MedicationStatement | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MedicationStatement | 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 | MedicationStatement | 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 | MedicationStatement | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MedicationStatement | 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 MedicationStatement

Summary

Extensions

This structure refers to these extensions:

- http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication

Slices

This structure defines the following Slices:

- The element 1 is sliced based on the value of MedicationStatement.medication[x]

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MedicationStatement |  | 0..* | MedicationStatement | Record of medication being taken by a patient
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:nzeps-long-term-medication |  | 0..1 | boolean | NZePS Long Term Medication Indicator URL: http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
status | ?!Σ | 1..1 | code | active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken Binding: Medication Status Codes (required): A coded concept indicating the current status of a MedicationStatement.
Slices for medication[x] | Σ | 1..1 |  | What medication was taken Slice: Unordered, Open by type:$this Binding: SNOMEDCTMedicationCodes (example): A coded concept identifying the substance or product being taken.
medicationCodeableConcept |  |  | CodeableConcept |
medicationReference |  |  | Reference(Medication) |
medication[x]:medicationCodeableConcept | Σ | 0..1 | CodeableConcept | What medication was taken Binding: http://nzmt.org.nz/vs (preferred)
subject | Σ | 1..1 | Reference(Patient | Group) | Who is/was taking the medication
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MedicationStatement.​status | Base | required | Medication status codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x] | Base | example | SNOMED CT Medication Codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x]:medicationCodeableConcept | Base | preferred | http://nzmt.org.nz/vs | Not State | Unknown

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MedicationStatement | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MedicationStatement | 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 | MedicationStatement | 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 | MedicationStatement | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MedicationStatement | 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 MedicationStatement

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MedicationStatement |  | 0..* | MedicationStatement | Record of medication being taken by a patient
Slices for extension |  | 0..* | Extension | Extension Slice: Unordered, Open by value:url
extension:nzeps-long-term-medication |  | 0..1 | boolean | NZePS Long Term Medication Indicator URL: http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication
Slices for medication[x] |  | 1..1 | CodeableConcept, Reference(Medication) | What medication was taken Slice: Unordered, Open by type:$this
medication[x]:medicationCodeableConcept |  | 0..1 | CodeableConcept | What medication was taken Binding: http://nzmt.org.nz/vs (preferred)
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
MedicationStatement.​medication[x]:medicationCodeableConcept | Base | preferred | http://nzmt.org.nz/vs | Not State | Unknown

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
MedicationStatement |  | 0..* | MedicationStatement | Record of medication being taken by a patient
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:nzeps-long-term-medication |  | 0..1 | boolean | NZePS Long Term Medication Indicator URL: http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
identifier | Σ | 0..* | Identifier | External identifier
basedOn | Σ | 0..* | Reference(MedicationRequest | CarePlan | ServiceRequest) | Fulfils plan, proposal or order
partOf | Σ | 0..* | Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Observation) | Part of referenced event
status | ?!Σ | 1..1 | code | active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken Binding: Medication Status Codes (required): A coded concept indicating the current status of a MedicationStatement.
statusReason |  | 0..* | CodeableConcept | Reason for current status Binding: SNOMEDCTDrugTherapyStatusCodes (example): A coded concept indicating the reason for the status of the statement.
category | Σ | 0..1 | CodeableConcept | Type of medication usage Binding: Medication usage category codes (preferred): A coded concept identifying where the medication included in the MedicationStatement is expected to be consumed or administered.
Slices for medication[x] | Σ | 1..1 |  | What medication was taken Slice: Unordered, Open by type:$this Binding: SNOMEDCTMedicationCodes (example): A coded concept identifying the substance or product being taken.
medicationCodeableConcept |  |  | CodeableConcept |
medicationReference |  |  | Reference(Medication) |
medication[x]:medicationCodeableConcept | Σ | 0..1 | CodeableConcept | What medication was taken Binding: http://nzmt.org.nz/vs (preferred)
subject | Σ | 1..1 | Reference(Patient | Group) | Who is/was taking the medication
context | Σ | 0..1 | Reference(Encounter | EpisodeOfCare) | Encounter / Episode associated with MedicationStatement
effective[x] | Σ | 0..1 |  | The date/time or interval when the medication is/was/will be taken
effectiveDateTime |  |  | dateTime |
effectivePeriod |  |  | Period |
dateAsserted | Σ | 0..1 | dateTime | When the statement was asserted?
informationSource |  | 0..1 | Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Organization) | Person or organization that provided the information about the taking of this medication
derivedFrom |  | 0..* | Reference(Resource) | Additional supporting information
reasonCode |  | 0..* | CodeableConcept | Reason for why the medication is being/was taken Binding: Condition/Problem/DiagnosisCodes (example): A coded concept identifying why the medication is being taken.
reasonReference |  | 0..* | Reference(Condition | Observation | DiagnosticReport) | Condition or observation that supports why the medication is being/was taken
note |  | 0..* | Annotation | Further information about the statement
dosage |  | 0..* | Dosage | Details of how medication is/was taken or should be taken
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
MedicationStatement.​language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
MedicationStatement.​status | Base | required | Medication status codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​statusReason | Base | example | SNOMED CT Drug Therapy Status codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​category | Base | preferred | Medication usage category codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x] | Base | example | SNOMED CT Medication Codes | 📍4.0.1 | FHIR Std.
MedicationStatement.​medication[x]:medicationCodeableConcept | Base | preferred | http://nzmt.org.nz/vs | Not State | Unknown
MedicationStatement.​reasonCode | Base | example | Condition/Problem/Diagnosis Codes | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | MedicationStatement | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | MedicationStatement | 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 | MedicationStatement | 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 | MedicationStatement | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | MedicationStatement | 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 MedicationStatement

Summary

Extensions

This structure refers to these extensions:

- http://hl7.org.nz/fhir/StructureDefinition/nzeps-long-term-medication

Slices

This structure defines the following Slices:

- The element 1 is sliced based on the value of MedicationStatement.medication[x]

Other representations of profile: CSV, Excel, Schematron