Da Vinci Project: Payer-Provider FHIR Implementation Guides
The Da Vinci Project is an HL7-based industry collaboration developing FHIR implementation guides for value-based care workflows. Covers prior authorization, quality measure exchange, member attribution, risk adjustment, formulary, and provider directory.
Key Da Vinci implementation guides
- CRD / DTR / PAS — Coverage Requirements Discovery, Documentation Templates and Rules, Prior Authorization Support. The trio that operationalizes the CMS Interoperability and Prior Authorization Final Rule.
- DEQM — Data Exchange for Quality Measures: standardized payer-provider exchange of quality measure data and gap-in-care information.
- Risk Adjustment Coding Gaps — payer-to-provider notification of suspected HCC documentation gaps.
- Member Attribution — payer-to-provider sharing of attributed beneficiary lists.
- Plan-Net — provider directory.
Why Da Vinci matters in 2026
The CMS Interoperability and Prior Authorization Final Rule (published Jan 2024, effective Jan 2026 / 2027) requires impacted payers to implement Da Vinci CRD, DTR, and PAS-style FHIR APIs. Providers connecting to those APIs eliminate fax-based prior auth workflows and get real-time coverage decisions at the point of order entry.
Where Vizier fits
Vizier reads the data exchanged via Da Vinci-compatible APIs into the same analytics layer as EHR-pulled clinical data. The combination produces analytics that span clinical care + payer interaction — risk-adjusted gap analytics, denial rate by payer policy version, prior auth turnaround analytics.