Most health plans have compliance efforts underway. Fewer have compliance that's actually built in — automated, auditable, and ready for what comes after January 2027. OnyxOS turns CMS-0057 from a project into infrastructure.
OnyxOS embeds CMS-0057 compliance into your infrastructure through a FHIR-native automation platform — not a compliance layer sitting beside your systems. Patient Access, Provider Access, Payer-to-Payer, and Electronic Prior Authorization are all built in, monitored in real time, and architected to evolve with the regulatory landscape. Onyx helped shape these standards. We've guided 50+ payer organizations. We know what "done" looks like — and what it takes to stay there.
Provider outreach is targeted. And closure is tracked and reconciled automatically as new data arrives.
Production-ready FHIR APIs for Patient Access and Provider Access — built to CMS-0057 specifications and continuously maintained against regulatory updates.
Automated member data exchange between payers at enrollment, built on Bulk FHIR and aligned to CMS-0057 timelines and opt-in requirements.
End-to-end ePA implementation using CDS Hooks, DTR, and PAS — embedded into clinical workflows to automate PA decisions at the point of care.
Standards-compliant Formulary and Provider Directory APIs, maintained and updated to keep pace with evolving CMS requirements.
Continuous monitoring across all API endpoints and workflows — so compliance status is always current, and audit preparation isn't a fire drill.
— a platform that evolves with regulations, not one that requires rebuilding every cycle.
— real-time monitoring means documentation and evidence are always ready, not assembled under deadline.
— Onyx's pre-built modules and standards expertise compress time-to-compliance significantly.
— integrated infrastructure replaces fragmented point solutions and the ongoing cost of stitching them together.
Onyx architected CMS Blue Button 2.0 — the largest FHIR implementation in the world. Our team has authored 20+ HL7 FHIR and C-CDA standards. OnyxOS is built on that foundation, and it's available to health plans that need to be ready for January 2027 and everything after.
Explore the OnyxOS platformA provider organization with 20+ locations faced a 30% PA denial rate and mounting administrative burden, with CMS-0057 requiring electronic prior authorization by January 2027. Disconnected EMRs and payer portals were blocking real-time data exchange. Onyx implemented a full FHIR-based ePA solution — automating PA triggers at clinical decision points within existing EMR workflows.
Read the full case studyOnyx offers a complimentary, expert-led Readiness Check that gives you a structured view of where you stand — in one week.
