Extension: Periodontitis Grade (Experimental)
| Official URL: https://fhir.cognovis.de/dental-core/StructureDefinition/periodontitis-grade | Version: 0.2.0 | |||
| Draft as of 2026-08-13 | Computable Name: PeriodontitisGradeExt | |||
| Other Identifiers: OID:2.16.840.1.113883.3.7985.2.42.21 | ||||
Copyright/Legal: Copyright 2026+ cognovis GmbH. Cognovis-authored Dental Core material is licensed under Apache-2.0; third-party material retains its own terms as documented in the Third-Party Notices. |
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Progression grade A through C from the 2017 World Workshop periodontitis classification.
Context of Use
This extension may be used on the following element(s):
- Element ID Condition
Usage info
Usages:
- Use this Extension: Dental Periodontitis Condition
- Examples for this Extension: Condition/dental-core-example-periodontitis-condition
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.
This structure is derived from Extension
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..* | Extension | Periodontitis Grade | |
  extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.cognovis.de/dental-core/StructureDefinition/periodontitis-grade" | |
  value[x] |
0..1 | CodeableConcept | Value of extension Binding: 2017 World Workshop Periodontitis Grades (required) | |
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Periodontitis Grade | |
 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://fhir.cognovis.de/dental-core/StructureDefinition/periodontitis-grade" | |
| value[x] |
0..1 | CodeableConcept | Value of extension Binding: 2017 World Workshop Periodontitis Grades (required) | |
| Documentation for this format | ||||
This structure is derived from Extension
Differential View
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Periodontitis Grade | |
| extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.cognovis.de/dental-core/StructureDefinition/periodontitis-grade" | |
| value[x] |
0..1 | CodeableConcept | Value of extension Binding: 2017 World Workshop Periodontitis Grades (required) | |
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Periodontitis Grade | |
| 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://fhir.cognovis.de/dental-core/StructureDefinition/periodontitis-grade" | |
| value[x] |
0..1 | CodeableConcept | Value of extension Binding: 2017 World Workshop Periodontitis Grades (required) | |
| Documentation for this format | ||||
Other representations of profile: CSV, Excel, Schematron
Terminology Bindings
| Path | Status | Usage | ValueSet | Version | Source |
| Extension.value[x] | Base | required | 2017 World Workshop Periodontitis Grades | 📦0.2.0 | 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()
|