Implementation Guide
ePA Medication Service
Version 1.3.5 - release

## Extension: IsEMPExtension

Official URL: https://gematik.de/fhir/epa-medication/StructureDefinition/is-emp-extension | Version: 1.3.0
Active as of 2025-12-15 | Computable Name: IsEMPExtension
Copyright/Legal: gematik GmbH / Dieses Artefakt ist lizenziert unter Apache License, Version 2.0.

Definiert ob etwas einen Bezug zum eMP hat

Context of Use

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

- Element ID MedicationStatement.basedOn

Usage info

Usages:

- Use this Extension: EPA MedicationStatement
- Examples for this Extension: Bundle/example-get-medication-list-bundle1, Bundle/example-get-medication-plan-bundle-1, MedicationStatement/Technical-Exp-NachtragEmpMedicationStatementEml, MedicationStatement/f29f1d0c-be05-4b0d-a335-3e508da39c0c and Parameters/example-epa-op-link-emp-entry-output-parameters-1
- Search Parameters using this Extension: IsEMPSP

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.

- Text Summary
- Differential Table
- Snapshot Table
- All

This structure is derived from Extension

Summary

Simple Extension with the type boolean: Definiert ob etwas einen Bezug zum eMP hat

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://gematik.de/fhir/epa-medication/StructureDefinition/is-emp-extension"
value[x] |  | 1..1 | boolean | Hat es einen eMP Bezug?
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | 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 | "https://gematik.de/fhir/epa-medication/StructureDefinition/is-emp-extension"
value[x] |  | 1..1 | boolean | Hat es einen eMP Bezug?
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type boolean: Definiert ob etwas einen Bezug zum eMP hat

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://gematik.de/fhir/epa-medication/StructureDefinition/is-emp-extension"
value[x] |  | 1..1 | boolean | Hat es einen eMP Bezug?
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | 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 | "https://gematik.de/fhir/epa-medication/StructureDefinition/is-emp-extension"
value[x] |  | 1..1 | boolean | Hat es einen eMP Bezug?
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 | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`