Implementation Guide
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Version 2.0.0-ballot.2 - ballot

## Extension: GEM ERP EX AvailabilityState

Official URL: https://gematik.de/fhir/erp/StructureDefinition/GEM_ERP_EX_AvailabilityState | Version: 2.0.0-ballot.2
Active as of 2026-06-30 | Computable Name: GEM_ERP_EX_AvailabilityState
Copyright/Legal: gematik GmbH / Dieses Artefakt ist lizenziert unter Apache License, Version 2.0.

Extension zur Angabe von Typ des Verfügbarkeitsstatus für die Anfrage zur Medikamentenverfügbarkeit.

Context of Use

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

- Element ID Communication.payload

Usage info

Usages:

- Use this Extension: GEM ERP PR Communication Reply
- Examples for this Extension: Communication/7977a4ab-97a9-4d95-afb3-6c4c1e2ac596

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 Coding: Extension zur Angabe von Typ des Verfügbarkeitsstatus für die Anfrage zur Medikamentenverfügbarkeit.

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/erp/StructureDefinition/GEM_ERP_EX_AvailabilityState"
value[x] |  | 0..1 | Coding | Value of extension Binding: Bearbeiter eines E-Rezeptes (required): Availability of medication
system |  | 1..1 | uri | Identity of the terminology system
code |  | 1..1 | code | Symbol in syntax defined by the system
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/erp/StructureDefinition/GEM_ERP_EX_AvailabilityState"
value[x] |  | 0..1 | Coding | Value of extension Binding: Bearbeiter eines E-Rezeptes (required): Availability of medication
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
system | Σ | 1..1 | uri | Identity of the terminology system
version | Σ | 0..1 | string | Version of the system - if relevant
code | Σ | 1..1 | code | Symbol in syntax defined by the system
display | Σ | 0..1 | string | Representation defined by the system
userSelected | Σ | 0..1 | boolean | If this coding was chosen directly by the user
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Coding: Extension zur Angabe von Typ des Verfügbarkeitsstatus für die Anfrage zur Medikamentenverfügbarkeit.

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/erp/StructureDefinition/GEM_ERP_EX_AvailabilityState"
value[x] |  | 0..1 | Coding | Value of extension Binding: Bearbeiter eines E-Rezeptes (required): Availability of medication
system |  | 1..1 | uri | Identity of the terminology system
code |  | 1..1 | code | Symbol in syntax defined by the system
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/erp/StructureDefinition/GEM_ERP_EX_AvailabilityState"
value[x] |  | 0..1 | Coding | Value of extension Binding: Bearbeiter eines E-Rezeptes (required): Availability of medication
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
system | Σ | 1..1 | uri | Identity of the terminology system
version | Σ | 0..1 | string | Version of the system - if relevant
code | Σ | 1..1 | code | Symbol in syntax defined by the system
display | Σ | 0..1 | string | Representation defined by the system
userSelected | Σ | 0..1 | boolean | If this coding was chosen directly by the user
Documentation for this format

Other representations of profile: CSV, Excel, Schematron

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Bearbeiter eines E-Rezeptes | 📦2.0.0-ballot.2 | This IG

#### 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()`