RareLink Implementation Guide - Local Development build (v2.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
Extension: Age at Onset
| Official URL: https://rarelink.bih-charite.de/fhir/StructureDefinition/age-at-onset | Version: 2.0.0 | |||
| Draft as of 2025-09-25 | Computable Name: AgeAtOnset | |||
ERDRI-CDS - The age at which the condition first appeared.
Context of Use
This extension may be used on the following element(s):
- Element ID Element
Usage info
Usages:
- Use this Extension: RareLink IPS 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 | Age at Onset | |
  extension |
0..0 | |||
| url |
1..1 | uri | "https://rarelink.bih-charite.de/fhir/StructureDefinition/age-at-onset" | |
  value[x] |
0..1 | CodeableConcept | Value of extension Binding: Age at Onset Value Set (extensible) | |
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Age at Onset | |
 id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | |||
| url |
1..1 | uri | "https://rarelink.bih-charite.de/fhir/StructureDefinition/age-at-onset" | |
| value[x] |
0..1 | CodeableConcept | Value of extension Binding: Age at Onset Value Set (extensible) | |
| 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 | Age at Onset | |
| extension |
0..0 | |||
| url |
1..1 | uri | "https://rarelink.bih-charite.de/fhir/StructureDefinition/age-at-onset" | |
| value[x] |
0..1 | CodeableConcept | Value of extension Binding: Age at Onset Value Set (extensible) | |
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Age at Onset | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | |||
| url |
1..1 | uri | "https://rarelink.bih-charite.de/fhir/StructureDefinition/age-at-onset" | |
| value[x] |
0..1 | CodeableConcept | Value of extension Binding: Age at Onset Value Set (extensible) | |
| Documentation for this format | ||||
Other representations of profile: CSV, Excel, Schematron
Terminology Bindings
| Path | Conformance | ValueSet | URI |
| Extension.value[x] | extensible | AgeAtOnsetVShttps://rarelink.bih-charite.de/fhir/ValueSet/age-at-onset-vsFrom this IG |
Constraints
| Id | Grade | Path(s) | Details | Requirements |
| 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() |