Implementation Guide
TI Common
Version 1.3.1 - release

## Data Type Profile: Identifikator Profil für E-Rezept-IDs

Official URL: https://gematik.de/fhir/ti/StructureDefinition/e-prescription-id | Version: 1.1.1
Active as of 2025-09-12 | Computable Name: EPrescriptionId
Copyright/Legal: gematik GmbH / Dieses Artefakt ist lizenziert unter Apache License, Version 2.0.

Die E-Rezept-ID ist eine generierte und nicht veränderbare Zahlenfolge, die durch Punkte getrennt ist. Die ersten drei Ziffern definieren die Art der Verordnung. Die nächsten zwölf Ziffern stellen die generierte, eindeutige und fortlaufende Sequenz der Verordnung dar. Die letzten beiden Ziffern sind Prüfziffern gemäß ISO 7064.

Usages:

- This DataType 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
--- | --- | --- | --- | ---
Identifier |  | 0..* | Identifier | An identifier intended for computation
use | ?!Σ | 0..1 | code | usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . Fixed Value: official
system | S Σ | 1..1 | uri | The namespace for the identifier value Fixed Value: https://gematik.de/fhir/erp/NamingSystem/GEM_ERP_NS_PrescriptionId
value | S Σ | 1..1 | string | The value that is unique Example General: 123456
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Identifier.use | Base | required | IdentifierUse | 📍4.0.1 | FHIR Std.

#### 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())`

This structure is derived from Identifier

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Identifier |  | 0..* | Identifier | An identifier intended for computation
use |  | 0..1 | code | usual | official | temp | secondary | old (If known) Fixed Value: official
system | S | 1..1 | uri | The namespace for the identifier value Fixed Value: https://gematik.de/fhir/erp/NamingSystem/GEM_ERP_NS_PrescriptionId
value | S | 1..1 | string | The value that is unique
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Identifier |  | 0..* | Identifier | An identifier intended for computation
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
use | ?!Σ | 0..1 | code | usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . Fixed Value: official
type | Σ | 0..1 | CodeableConcept | Description of identifier Binding: Identifier Type Codes (extensible): A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
system | S Σ | 1..1 | uri | The namespace for the identifier value Fixed Value: https://gematik.de/fhir/erp/NamingSystem/GEM_ERP_NS_PrescriptionId
value | S Σ | 1..1 | string | The value that is unique Example General: 123456
period | Σ C | 0..1 | Period | Time period when id is/was valid for use Constraints: per-1
assigner | Σ C | 0..1 | Reference(Organization) | Organization that issued id (may be just text) Constraints: ref-1
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Identifier.use | Base | required | IdentifierUse | 📍4.0.1 | FHIR Std.
Identifier.type | Base | extensible | IdentifierType | 📍4.0.1 | FHIR Std.

#### 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()`
per-1 | error | Identifier.period | If present, start SHALL have a lower value than end | `start.hasValue().not() or end.hasValue().not() or (start <= end)`
ref-1 | error | Identifier.assigner | SHALL have a contained resource if a local reference is provided | `reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))`

This structure is derived from Identifier

Summary

Mandatory: 2 elements
Must-Support: 2 elements
Fixed: 2 elements

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Identifier |  | 0..* | Identifier | An identifier intended for computation
use | ?!Σ | 0..1 | code | usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . Fixed Value: official
system | S Σ | 1..1 | uri | The namespace for the identifier value Fixed Value: https://gematik.de/fhir/erp/NamingSystem/GEM_ERP_NS_PrescriptionId
value | S Σ | 1..1 | string | The value that is unique Example General: 123456
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Identifier.use | Base | required | IdentifierUse | 📍4.0.1 | FHIR Std.

#### 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())`

Differential View

This structure is derived from Identifier

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Identifier |  | 0..* | Identifier | An identifier intended for computation
use |  | 0..1 | code | usual | official | temp | secondary | old (If known) Fixed Value: official
system | S | 1..1 | uri | The namespace for the identifier value Fixed Value: https://gematik.de/fhir/erp/NamingSystem/GEM_ERP_NS_PrescriptionId
value | S | 1..1 | string | The value that is unique
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Identifier |  | 0..* | Identifier | An identifier intended for computation
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
use | ?!Σ | 0..1 | code | usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . Fixed Value: official
type | Σ | 0..1 | CodeableConcept | Description of identifier Binding: Identifier Type Codes (extensible): A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
system | S Σ | 1..1 | uri | The namespace for the identifier value Fixed Value: https://gematik.de/fhir/erp/NamingSystem/GEM_ERP_NS_PrescriptionId
value | S Σ | 1..1 | string | The value that is unique Example General: 123456
period | Σ C | 0..1 | Period | Time period when id is/was valid for use Constraints: per-1
assigner | Σ C | 0..1 | Reference(Organization) | Organization that issued id (may be just text) Constraints: ref-1
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Identifier.use | Base | required | IdentifierUse | 📍4.0.1 | FHIR Std.
Identifier.type | Base | extensible | IdentifierType | 📍4.0.1 | FHIR Std.

#### 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()`
per-1 | error | Identifier.period | If present, start SHALL have a lower value than end | `start.hasValue().not() or end.hasValue().not() or (start <= end)`
ref-1 | error | Identifier.assigner | SHALL have a contained resource if a local reference is provided | `reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))`

This structure is derived from Identifier

Summary

Mandatory: 2 elements
Must-Support: 2 elements
Fixed: 2 elements

Other representations of profile: CSV, Excel, Schematron