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REDCap import/export

The builder can convert between a REDCap Data Dictionary (the CSV that defines a REDCap instrument) and a FHIR Questionnaire, in both directions. This lets you bring existing REDCap instruments into FHIR, or hand a FHIR questionnaire to a REDCap user.

Importing a REDCap Data Dictionary

Open Questionnaires ▾ → 📂 From file…, choose the format REDCap CSV — Data Dictionary (.csv), and pick your file. The converter maps REDCap concepts to FHIR:

  • Field types (text, notes, radio, dropdown, checkbox, yes/no, calc, …) → the matching questionnaire item types.
  • Choices → answer options.
  • Branching logic → enableWhen visibility conditions.
  • Calculated fields → FHIRPath calculatedExpression where the formula can be translated.

The file is checked as it loads, and any rows that can't be represented are reported so you know what to review.

Exporting to a REDCap Data Dictionary

Open Save ▾, choose the export format REDCap CSV — Data Dictionary (.csv), and download. Before the file is produced, a compatibility report runs and warns about anything in the FHIR questionnaire that REDCap cannot represent exactly — so you can decide whether to adjust the form or accept the loss.

Round-tripping

To make REDCap ↔ FHIR conversions reversible, the converter stores REDCap-specific details that have no FHIR equivalent in private extensions (under a fhir-qb.app/redcap/ namespace). Because of differences between the two formats, treat a round-trip as high-fidelity but not always byte-identical — the compatibility report tells you where the two models diverge.

Next: Cloud save & sharing.