Helping You Get CMS-0057 Right. 

Onyx helped shape the CMS-0057 standards and we’re already powering live payer implementations with production-ready FHIR APIs.

The CMS-0057 deadline is coming fast. Requirements are complex, timelines are tight, and the internal lift is heavy. But you don’t have to navigate it alone.
Here’s how we make CMS-0057 compliance across Patient Access, Provider Access, Payer-to-Payer Exchange, and ePA simpler:
  • Cut through complexity: Understand exactly what CMS-0057 requires, and what it doesn’t.
  • Rely on proven tech: Scalable, standards-based FHIR APIs already live in payer environments.
  • Follow a clear plan: Step-by-step Playbooks and a milestone-driven roadmap that reduce risk and integrate seamlessly with your systems.

 

Our Team is Here to Help
"Your Playbooks...it's all spelled out, step-by-step, and man they are clear as day."

IT Program Manager,  Large Regional Health Plan 

2025-best-in-klas-cms-payer-interoperability

Why Onyx?  

  • We set the standards – Helped draft CMS-0057 guides; lead roles in HL7, Da Vinci, CARIN, and FHIRBall.
  • Proven at scale – Built CMS Blue Button 2.0 for 60M+ Americans; live with federal agencies and commercial payers.
  • Recognized leader – Best in KLAS for CMS Payer Interoperability (2025); “Most Accurate & Relevant” by Black Book.
  • Simplifies compliance – Easy Playbooks, modular design, and seamless integration reduce lift, cost, and risk.
  • Partnership network – Works with your existing systems to simplify design, reduce complexity, and lower costs.
  • Built for what’s next – OnyxOS delivers scalable, secure, cloud-native FHIR solutions—ready for CMS-0057 and beyond.