SDC: StructureDefinition-sdc-questionnaire-definitionExtractValue-intro

This extension will only be processed while extracting a resource based on a parent item (or root) using either the definitionExtract or itemExtractionContext (legacy) extension. It is <strong>NOT</strong> valid to specify an extractDefinitionValue prior to (and outside the hierarchy) where the corresponding extractDefinition is found.

It is used to define the value of a property on the resource being extracted, without requiring an item/answer in the questionnaire response (typically for fixed, or derived/calculated values).

The property is based on the value in the definition property, where the prefix (before the #) must exactly match the profile's canonical URL from the extraction context in a parent item/root.

Additional details on the use of this extension can be found on the Data Extraction page.