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-R5/ and changes regularly. See the Directory of published versions
| Official URL: https://fhir.hl7.at/core/r5/StructureDefinition/at-core-ext-valueset-systemoid | Version: 2.1.0 | ||||
| Active as of 2026-10-20 | 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
https://fhir.hl7.at/core/r5/StructureDefinition/at-core-valueset#ValueSet.compose.include
https://fhir.hl7.at/core/r5/StructureDefinition/at-core-valueset#ValueSet.expansion.contains
Usage info
Usages:
You can also check for usages in the FHIR IG Statistics
Description Differentials, Snapshots, and other representations.
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:  |
|---|---|---|---|---|
  Extension |
0..* | Extension | System OID | |
  id |
0..1 | id | Unique id for inter-element referencing | |
 extension |
0..0 | Extension Slice: Unordered, Open by value:url Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them | ||
| url |
1..1 | uri | "https://fhir.hl7.at/core/r5/StructureDefinition/at-core-ext-valueset-systemoid" | |
 value[x] |
1..1 | oid | Value of extension | |
| Documentation for this format | ||||
| Id | Grade | Path(s) | Description | Expression |
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 | id | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them | ||
| url |
1..1 | uri | "https://fhir.hl7.at/core/r5/StructureDefinition/at-core-ext-valueset-systemoid" | |
| value[x] |
1..1 | oid | Value of extension | |
| Documentation for this format | ||||
| Id | Grade | Path(s) | Description | Expression |
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
