Da Vinci
HL7 Da Vinci Project
Da Vinci is the HL7 accelerator that publishes FHIR implementation guides for payer–provider workflows, including prior authorization, coverage, and data exchange.
The HL7 Da Vinci Project is a private-sector accelerator that develops FHIR implementation guides for value-based and administrative payer–provider workflows. Its guides turn broad FHIR into specific, testable specifications for real business processes.
Key Da Vinci IGs include PAS (Prior Authorization Support), CRD (Coverage Requirements Discovery), DTR (Documentation Templates and Rules), PDex (Payer Data Exchange), CDex (Clinical Data Exchange), HRex (the shared framework), and Plan-Net (provider directories). CMS-0057-F's Prior Authorization API is built directly on the Da Vinci prior-auth guides.
Because Da Vinci defines the exact profiles and interactions for these workflows, conformance to the right Da Vinci IG — not just to base FHIR — is what makes a payer implementation interoperable and audit-ready.
How this relates to Health1st
Health1st validates output against the relevant Da Vinci IGs (PAS, CRD, DTR, PDex, CDex) and drives those exchanges in its Prior-Authorization Agent, so payer workflows conform to the specific guide CMS-0057-F requires.
Related terms
PARDD is the CMS-0057-F Prior Authorization API that lets providers query coverage requirements, gather documentation, and submit and track authorization decisions via FHIR.
A FHIR-based API that automates the prior-authorization workflow — checking requirements, gathering documentation, and exchanging decisions — as required by CMS-0057-F.
US Core is the HL7 implementation guide that constrains FHIR resources into the specific profiles US regulation requires, binding them to USCDI data elements.
X12 278 is the EDI transaction US payers use for prior-authorization and referral requests and responses.
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