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Vermont just went through the biggest billing transition in the country this year. OneCare Vermont, the accountable care organization that ran Medicare, Medicaid, and commercial claims through a single value-based payment model since 2017, wound down at the end of 2025. Providers received their final fixed payment on December 26, 2025, and returned to submitting fee-for-service claims on January 1, 2026. If your billing workflow is still built for the old model, you are behind by several months already.
National RCM playbooks assume every state works the same way. Vermont doesn't, and the practices that lose the most revenue are the ones billed like it does.
The Vermont All-Payer ACO Model, a first-of-its-kind CMS agreement running Medicare, Medicaid, and commercial payers through one accountable care structure, began in 2017 and concluded on December 31, 2025. OneCare Vermont, the ACO built to administer it, wound down operations at the same time. This wasn't a minor program tweak. It was the end of the specific payment mechanism most Vermont providers had billed under for close to a decade.
OneCare issued its final fixed payment to providers on December 26, 2025, with reconciling activity continuing into April 2026. Since January 1, 2026, Vermont providers have been submitting claims for fee-for-service payment instead. For anyone who built their billing operation around OneCare's value-based payment cycle, the claim-by-claim fee-for-service world is a genuinely different operational rhythm, not just a rate change.
Vermont is one of the early states participating in the AHEAD model, States Advancing All-Payer Health Equity Approaches and Development, which holds participating states accountable for overall healthcare spending and population health outcomes. It's a different framework than OneCare's, still taking shape through 2026, and worth tracking closely if your practice bills a meaningful share of Medicare or Medicaid volume.
The University of Vermont Health Network, which became OneCare's parent company in 2021, remains the dominant hospital system in the state. Dartmouth Health, based just across the New Hampshire border, also carries significant weight for Vermont patients in the eastern part of the state, and was a founding partner in building OneCare in the first place.
OneCare's end didn't touch Vermont's other major cost-control mechanism. The Green Mountain Care Board reviews and approves a binding annual budget for every Vermont hospital, regulates health insurance premium rates, and oversees major capital investments through the state's Certificate of Need process. The Board just finished updating its Hospital Budget Review Rule, with the revised rule taking effect July 1, 2026. For a billing operation, this matters less at the individual-claim level and more strategically: a hospital-affiliated practice operates inside a budget ceiling its parent system negotiated with the state, and that ceiling shapes staffing and service-line investment in ways an independent practice down the street doesn't have to navigate.
Any practice that hasn't updated its claims workflow since January 1, 2026 is still operating on assumptions from a payment model that no longer exists. OneCare's fixed-payment cycle is gone. Fee-for-service claim submission, with its own timing and documentation requirements, is the current reality, and the transition has already been underway for months.
OneCare's final reconciliation activity continued past the December 2025 wind-down date into April 2026. Practices with outstanding value-based payment adjustments from the old model need those tracked separately from their new fee-for-service claims, not folded together and lost in the transition.
Vermont's next payment framework, the AHEAD model, is still being built out through 2026. Practices that assume today's fee-for-service billing is the permanent end state, rather than a transition period, risk being caught flat-footed again when AHEAD's specific requirements solidify.
OneCare's wind-down and the Green Mountain Care Board's hospital budget authority are two different mechanisms, one governed the payment model, the other governs hospital spending ceilings, and they didn't end or change together. A practice that treats the OneCare transition as the only Vermont-specific regulatory shift this year is missing the Board's own rule update taking effect July 1, 2026.
The plan rejects the claim outright. Prior authorization can’t be obtained retroactively, so the practice loses the full claim value.
Authorization rules are mapped at check-in, and booking is locked until the token is validated.
A claim submitted past the filing deadline gets written off as an administrative loss.
Claims are scrubbed, batched, and filed within 24 hours of note lock, well inside any filing deadline.
The payer pays a minimal out-of-network rate, and the underpaid balance is written off to avoid dispute overhead.
Payment outputs are tracked against historical contracts, and an underpaid claim triggers a state or federal dispute automatically.
A free audit checks your last 90 days of claims against the Vermont-specific issues above.
Medicaid: Vermont Medicaid, transitioning from the Vermont All-Payer ACO Model (ended December 31, 2025) to fee-for-service billing as of January 1, 2026, with the AHEAD model taking shape as the next framework
Medicare Administrative Contractor: National Government Services (NGS), operating as Wellpoint Federal since April 1, 2026 (Jurisdiction K, shared with New York, Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island)
This CMS agreement ran Medicare, Medicaid, and commercial payers through OneCare Vermont's accountable care structure since 2017. It concluded at the end of 2025, and OneCare wound down operations alongside it. Providers received their final fixed payment on December 26, 2025.
Vermont providers returned to submitting claims for fee-for-service payment starting January 1, 2026, with OneCare reconciliation activity continuing into April 2026. We track any outstanding OneCare reconciliation separately from current fee-for-service claims for clients transitioning off the old model.
Vermont's Medicare Administrative Contractor changed its operating name this year as part of Jurisdiction K, the same transition affecting New York, Connecticut, and the rest of the region. We verify clearinghouse and EDI enrollment records reference the current entity name.
The GMCB, which independently reviews and approves binding annual budgets for every Vermont hospital and regulates insurance premium rates, adopted an updated Hospital Budget Review Rule effective July 1, 2026. This runs on its own timeline, separate from the OneCare-to-fee-for-service transition, and shapes the budget ceiling hospital-affiliated practices operate under.
Book a 15-minute call and we'll walk through exactly how your specific payer mix would be handled.
Every fact on this page, from the Medicaid structure to the regulatory notes, was researched specifically for Vermont, not copied from a 50-state boilerplate.
AAPC-certified coders handle your claims directly, with a named point of contact instead of a rotating support queue.
We run your existing vendor in parallel while we credential and rebuild your claim rules, so nothing lapses during the switch.
Claims submission rebuilt for Vermont's return to fee-for-service billing after the end of the OneCare all-payer model.
Learn moreFull-cycle RCM that separates outstanding OneCare reconciliation activity from current fee-for-service claims during the transition.
Learn moreProvider enrollment across Blue Cross Blue Shield of Vermont, MVP Health Care, and the hospital-affiliated networks tied to UVM Health Network.
Learn moreA free audit that checks specifically for billing workflows still configured around the ended OneCare payment model.
Learn moreFront-desk and administrative support that scales with a growing Vermont practice without new office overhead.
Learn moreBenchmarks your claims data against current Vermont fee-for-service denial patterns during the post-OneCare transition.
Learn moreLocal visibility support built for a small, close-knit provider market where patients often travel across county lines for specialty care.
Learn moreTalk to our team about your specific specialty, payer mix, and current billing setup.
We analyze your last 90 days of claims for denial patterns, underpayments, and coding gaps specific to your state and specialty.
A written plan targeting the specific leakage points the audit found, not a generic onboarding checklist.
Your existing vendor keeps running while we credential and build claim rules in parallel, proven on real claims first.
Real-time reporting on collections, denials, and A/R velocity, so you see the recovery as it happens, not at quarter-end.
If we don't find money you're leaving on the table, you don't pay a dime.
No commitment. No sales pressure. Just answers.
