Extension 
url 
value[x] Binding: ?? (required): If value is of type 'code', then the extraction is always the creation of a new resource of the specified type.
valueExpression
valueCode Documentation for this formatThis is the set of resources that conform to both Item extraction context (http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-itemExtractionContext) and Extract Definition - Resource (legacy) (http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-itemExtractionContext).
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension | 0..1 | Establishes mapping context for a Questionnaire item | ||
| url | 1..1 | uri | identifies the meaning of the extension | |
| value[x] | 0..1 | Value of extension Binding: ?? (required): If value is of type 'code', then the extraction is always the creation of a new resource of the specified type. | ||
| valueExpression | Expression | |||
| valueCode | code | |||
| Documentation for this format | ||||