Existing Wording: Questionnaires are excellent tools for data capture. They allow tight control over what data is gathered and ensure information is gathered consistently across multiple users. However, data gathered using different questionnaires - or even different versions of the same questionnaire - is often not comparible. It is also not very searchable or easily integrated with discrete data sources. Because of this, the general recommendation in FHIR is to use questionnaires for raw data capture but then to convert the resulting QuestionnaireResponse instances into other FHIR resources - Observations, MedicationStatements, FamilyMemberHistories, etc. This allows the data gathered to then be easily combined with other data into FHIR documents and messages and exposed over FHIR REST interfaces.

Comment:

This is an excellent framing of Questionnaire vs other types of resource usage and it would be great to have this integrated back into the Questionnaire "Boundaries and Relationships" text which contains similar but less clear framing.

Summary:

Add SDC guidances to Boundaries and Relationships to core spec