HL7® Austria FHIR® Core Implementation Guide
2.1.0 - STU3
HL7® Austria FHIR® Core Implementation Guide
2.1.0 - STU3
HL7® Austria FHIR® Core Implementation Guide, published by HL7® Austria, TC FHIR®. This guide is not an authorized publication; it is the continuous build for version 2.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7Austria/HL7-AT-FHIR-Core-R4/ and changes regularly. See the Directory of published versions
| Official URL: http://hl7.at/fhir/HL7ATCoreProfiles/4.0.1/StructureDefinition/at-core-ext-valueset-systemoid | Version: 2.1.0 | |||
| Active as of 2025-10-27 | Responsible: HL7® Austria, TC FHIR® | Computable Name: SystemOID | ||
HL7® Austria FHIR® Core Extension for the capturing of OID in ValueSets to reference the CodeSystem they come from. The extension is used to document the OID of the system of a code referenced in a ValueSet, to align FHIR with the HL7 Austria CDA document guidelines.
Context of Use
This extension may be used on the following element(s)
ValueSet.compose.include
ValueSet.expansion.contains
http://hl7.at/fhir/HL7ATCoreProfiles/4.0.1/StructureDefinition/at-core-valueset#ValueSet.compose.include
http://hl7.at/fhir/HL7ATCoreProfiles/4.0.1/StructureDefinition/at-core-valueset#ValueSet.expansion.contains
Usage info
Usages:
You can also check for usages in the FHIR IG Statistics
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 |
0..* | Extension | System OID | |
  id |
0..1 | string | Unique id for inter-element referencing | |
 extension |
0..0 | |||
| url |
1..1 | uri | "http://hl7.at/fhir/HL7ATCoreProfiles/4.0.1/StructureDefinition/at-core-ext-valueset-systemoid" | |
 value[x] |
1..1 | oid | Value of extension | |
| Documentation for this format | ||||
This structure is derived from Extension
Summary
Simple Extension with the type oid: HL7® Austria FHIR® Core Extension for the capturing of OID in ValueSets to reference the CodeSystem they come from. The extension is used to document the OID of the system of a code referenced in a ValueSet, to align FHIR with the HL7 Austria CDA document guidelines.
Differential View
This structure is derived from Extension
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | System OID | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | |||
| url |
1..1 | uri | "http://hl7.at/fhir/HL7ATCoreProfiles/4.0.1/StructureDefinition/at-core-ext-valueset-systemoid" | |
| value[x] |
1..1 | oid | Value of extension | |
| Documentation for this format | ||||
This structure is derived from Extension
Summary
Simple Extension with the type oid: HL7® Austria FHIR® Core Extension for the capturing of OID in ValueSets to reference the CodeSystem they come from. The extension is used to document the OID of the system of a code referenced in a ValueSet, to align FHIR with the HL7 Austria CDA document guidelines.
Other representations of profile: CSV, Excel, Schematron
| 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()
|