The Cicada Vaccine Forecasting Engine and Guide - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
Extension: Antigen Needing a Dose
| Official URL: http://fhirfli.dev/fhir/ig/cicada/StructureDefinition/antigen-needing-dose-ext | Version: 0.1.0 | |||
| Draft as of 2026-09-02 | Computable Name: AntigenNeedingDose | |||
An antigen within this vaccine group that needs the forecast dose. A multi-antigen group forecasts as one recommendation, so without this a caller cannot tell whether all of MMR is due or only the measles component. Repeats, one per antigen.
Context of Use
-
Element ID:
ImmunizationRecommendation.recommendation
This extension may be used on the following element(s)
Usage info
Usages:
- This Extension is not used by any profiles in this Implementation Guide
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
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..* | Extension | Antigen Needing a Dose | |
  id |
0..1 | string | Unique id for inter-element referencing | |
 extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "http://fhirfli.dev/fhir/ig/cicada/StructureDefinition/antigen-needing-dose-ext" | |
 value[x] |
0..1 | string | Value of extension | |
| Documentation for this format | ||||
This structure is derived from Extension
Differential View
This structure is derived from Extension
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Antigen Needing a Dose | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "http://fhirfli.dev/fhir/ig/cicada/StructureDefinition/antigen-needing-dose-ext" | |
| value[x] |
0..1 | string | Value of extension | |
| Documentation for this format | ||||
This structure is derived from Extension
Other representations of profile: CSV, Excel, Schematron
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()
|