ERA FHIR specification - Local Development build (v1.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
Extension: Extension medicationKnowledgeReference
| Official URL: http://resepti.kanta.fi/fhir/StructureDefinition/extension/medicationKnowledgeReference | Version: 1.0.0 | |||
| Draft as of 2026-10-28 | Computable Name: MedicationKnowledgeReference | |||
Reference from Medication to MedicationKnowledge. Source
The MedicationKnowledgeReference extension is used in the Medication resource.
Context of Use
-
Element ID:
Medication
This extension may be used on the following element(s)
Usage info
Usages:
- Use this Extension: MedicationListMedication
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
| Name | Flags | Card. | Type | Description & Constraints Filter:  |
|---|---|---|---|---|
  Extension |
Extension | Reference to MedicationKnowledge profile | ||
 url |
"http://resepti.kanta.fi/fhir/StructureDefinition/extension/medicationKnowledgeReference" | |||
  value[x] |
Reference(MedicationListMedicationKnowledge) | |||
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
N | 0..* | Extension | Reference to MedicationKnowledge profile Constraints: ext-1 |
 id |
0..1 | string | Unique id for inter-element referencing | |
 extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
| url |
1..1 | uri | "http://resepti.kanta.fi/fhir/StructureDefinition/extension/medicationKnowledgeReference" | |
| value[x] |
0..1 | Reference(MedicationListMedicationKnowledge) | Value of extension | |
| Documentation for this format | ||||
Differential View
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
Extension | Reference to MedicationKnowledge profile | ||
| url |
"http://resepti.kanta.fi/fhir/StructureDefinition/extension/medicationKnowledgeReference" | |||
| value[x] |
Reference(MedicationListMedicationKnowledge) | |||
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
N | 0..* | Extension | Reference to MedicationKnowledge profile Constraints: ext-1 |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
| url |
1..1 | uri | "http://resepti.kanta.fi/fhir/StructureDefinition/extension/medicationKnowledgeReference" | |
| value[x] |
0..1 | Reference(MedicationListMedicationKnowledge) | Value of extension | |
| Documentation for this format | ||||
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 | Extension, Extension.extension | Must have either extensions or value[x], not both |
extension.exists() != value.exists()
|