If you're running a behavioral health or addiction treatment center in Montana, Minnesota, New York, Arizona, Colorado, Tennessee, or Washington, you're watching your census fluctuate in ways that don't match your clinical outcomes. Patients are dropping mid-episode. Your intake coordinator is fielding calls from people who had Medicaid last month but don't today. Your billing team is chasing down eligibility that keeps changing.
This is Medicaid unwinding, and it's still actively disrupting SUD treatment census in 2026. The post-pandemic continuous enrollment protections ended, states began redetermining eligibility, and millions of people lost coverage. Not because they were ineligible, but because of paperwork, missed deadlines, and administrative churn.
This is the seventh and final piece in ForwardCare's state-by-state Medicaid unwinding series. We've covered 43 states. Now we're closing out the map with a cluster that spans frontier Montana, the integrated care complexity of Minnesota, the OASAS-regulated powerhouse of New York, Arizona's AHCCCS managed care system, Colorado's booming treatment market, Tennessee's three-MCO TennCare structure, and Washington's layered Apple Health environment.
Each of these states has a structurally distinct unwinding story. And if you're operating in any of them, you need to understand how redetermination is hitting your market, what it means for your payer mix, and how to protect revenue when coverage disappears mid-treatment.
What Medicaid Unwinding Means in 2026 and Why It Still Matters
Medicaid unwinding refers to the process where states resumed eligibility checks after the COVID-19 public health emergency ended. During the pandemic, continuous enrollment protections kept people covered. When those protections lifted in 2023, states began working through backlogs of redeterminations.
The result: coverage losses that continue to affect SUD treatment access in 2026. Federal funding instability compounds the problem. Patients lose coverage, can't afford private pay, and drop out of treatment before completing their episode of care.
For treatment centers, this translates to census volatility, revenue gaps, and operational uncertainty. The states in this article represent some of the most complex Medicaid environments in the country. Understanding how unwinding plays out in each one is critical to building a sustainable operation.
Montana: Frontier State Dynamics and the DPHHS Redetermination Reality
Montana is a frontier state. That means vast geography, sparse population, and a rural provider network under DPHHS that can't absorb coverage disruptions the way urban markets can.
When a patient in Billings or Missoula loses Medicaid, there's no commercial insurance fallback. There's no neighboring county with a sliding-scale clinic. There's often no alternative at all. The likely outcome is treatment dropout.
Montana's Medicaid program covers a significant share of SUD treatment volume. Redetermination disruptions hit hard because the state lacks the provider density to catch people when they fall through the cracks. If you're running an IOP or PHP in Montana, you need real-time eligibility verification at every session. Not weekly. Not monthly. Every time a patient walks in the door.
You also need a sliding scale protocol that's ready to deploy immediately. Waiting two weeks to figure out financial assistance means the patient is already gone. In frontier states, geography is destiny. If someone has to drive 90 minutes for treatment and can't afford it, they won't come back.
Minnesota: Medical Assistance, Prepaid Health Plans, and Rule 31 Licensing
Minnesota's Medicaid program is called Medical Assistance, and it operates through a mix of prepaid health plans and fee-for-service arrangements. The state's integrated behavioral health structure is more complex than most, and that complexity creates unique redetermination dynamics.
If you're a Rule 31-licensed provider operating IOP or PHP in Minnesota, you need to track enrollment stability by plan. Different prepaid health plans have different re-enrollment pathways, different authorization timelines, and different approaches to coverage continuity.
When a patient loses Medical Assistance coverage mid-episode, the re-enrollment process varies depending on which plan they were on and which county they live in. Some plans have streamlined presumptive eligibility processes. Others require full redetermination before coverage resumes.
The operational playbook here is straightforward: verify eligibility before every level of care transition, maintain direct relationships with plan care coordinators, and have a financial assistance protocol that covers the gap between coverage loss and re-enrollment. In Minnesota's integrated system, communication with the health plan is not optional. It's the only way to keep patients in treatment when coverage disruptions happen.
New York: OASAS Licensing, Medicaid Dependency, and Compounding Revenue Risk
New York runs one of the most heavily regulated SUD treatment systems in the country. OASAS-licensed providers operating under Article 32 or Article 819 certifications know this intimately. The state's Medicaid program covers a massive share of SUD treatment volume, and enrollment losses in a state with around 10 million Medicaid enrollees with SUD nationally create compounding revenue risk.
When Medicaid unwinding hit New York, it didn't just affect a few patients. It affected entire census cohorts. Providers saw weeks where 15% to 20% of their active patient load suddenly lost coverage. Re-enrollment took weeks or months, and many patients never came back.
The scale of Medicaid dependency in New York means that even small percentage drops in enrollment translate to significant revenue losses. If your center runs 80% Medicaid and 20% commercial, a 10% Medicaid enrollment drop is an 8% revenue hit. That's the difference between a profitable quarter and a loss.
New York providers need to diversify payer mix aggressively. That means building commercial contracts, expanding self-pay options, and developing financial assistance programs that can bridge coverage gaps. It also means understanding the state's insurance billing infrastructure and how to navigate authorization requirements when patients transition between payers.
Arizona: AHCCCS Managed Care Redetermination Cadence
Arizona's Medicaid program, AHCCCS, operates through a managed care structure that differs significantly from fee-for-service states. Redetermination cadence varies by MCO, and enrollment data shows behavioral health coverage losses concentrated in specific regions and plans.
For SUD treatment providers in Phoenix, Tucson, or Flagstaff, this means your redetermination experience depends heavily on which AHCCCS plan your patients are enrolled in. Some MCOs have more robust re-enrollment support. Others have higher procedural denial rates and longer authorization timelines.
The operational implication: you need to track redetermination patterns by MCO. If you're seeing higher coverage loss rates among patients enrolled with a specific plan, that's actionable intelligence. It tells you where to focus your eligibility verification efforts and which plans require more proactive care coordination.
Arizona providers should also understand how managed care authorization works when a patient loses and regains coverage. In many cases, you'll need to resubmit prior authorizations even if the patient is re-enrolled in the same plan. That's a billing workflow issue that can delay revenue by weeks if you're not prepared for it.
Colorado: Fast-Growing Market Meets Enrollment Headwinds
Colorado's SUD treatment market has been expanding rapidly. New providers are entering, existing centers are adding capacity, and demand for care remains high. But Medicaid enrollment headwinds from unwinding are hitting just as this growth is accelerating.
That timing matters. If you're opening a new center or expanding an existing one in Denver, Colorado Springs, or Fort Collins, your census projections need to account for Medicaid enrollment instability. The payer mix you modeled six months ago may not reflect the reality of 2026.
Colorado providers need to build payer mix diversification into their growth strategy from day one. That means commercial contracts, out-of-state referrals, and a robust self-pay infrastructure. It also means understanding how to bill for the full range of CPT and HCPCS codes that support different payer types.
The state's Medicaid program has strong coverage for SUD treatment, but unwinding has created gaps that commercial insurance and private pay need to fill. If your center is Medicaid-dependent in a fast-growing market, you're competing for a shrinking pool of covered lives. Diversification isn't optional anymore.
Tennessee: TennCare's Three-MCO Structure and Regional Variation
Tennessee's Medicaid program, TennCare, operates through three managed care organizations: Amerigroup, BlueCare Tennessee, and UnitedHealthcare Community Plan. Redetermination experiences vary significantly by plan, region, and level of care.
If you're running an IOP or PHP in Nashville, Memphis, or Knoxville, you're dealing with different MCO market shares in each city. Some regions are heavily dominated by one plan. Others have more balanced distribution. That affects how redetermination disruptions hit your census.
The operational playbook for Tennessee providers: maintain direct relationships with care coordinators at all three MCOs, track authorization timelines by plan, and understand which MCOs have the most streamlined re-enrollment processes. When a patient loses TennCare coverage, the speed of re-enrollment often depends on which plan they were enrolled in.
Tennessee also has significant regional variation in SUD treatment capacity. Urban markets like Nashville have more provider density, which means patients who lose coverage have more options. Rural markets face the same dropout risk as Montana. If you're operating in a rural Tennessee county, real-time eligibility verification and immediate financial assistance are critical to census retention.
Washington: Apple Health, BHASOs, and Layered Authorization
Washington's Medicaid program, Apple Health, operates through a system of behavioral health administrative services organizations (BHASOs) that create a uniquely layered authorization environment. For providers navigating coverage transitions, this structure adds complexity that doesn't exist in simpler fee-for-service states.
When a patient loses Apple Health coverage mid-episode of care, the re-authorization process involves both the managed care plan and the BHASO. That means two sets of paperwork, two approval timelines, and two potential points of failure.
Washington providers need to understand how BHASOs interact with managed care plans during redetermination. In some cases, presumptive eligibility can bridge the gap. In others, you're waiting for full re-enrollment before authorization resumes. The difference can be weeks of unbilled services.
The state's integrated managed care model is designed to improve care coordination, but during periods of coverage disruption, it can create administrative bottlenecks. Providers who maintain strong relationships with both their managed care plan and their regional BHASO are better positioned to navigate these transitions without losing patients or revenue.
Operational Playbook for All Seven States: Protect Census and Revenue
Regardless of which state you're operating in, the core strategies for managing Medicaid unwinding are consistent. Here's what works:
- Real-time eligibility verification: Check coverage status at every clinical touchpoint, not just at intake. Automated eligibility verification systems pay for themselves within weeks.
- Presumptive eligibility protocols: Understand how to use presumptive eligibility in your state to bridge coverage gaps while patients re-enroll.
- Sliding scale and financial assistance: Have a clear, fast protocol for transitioning patients to sliding scale or financial assistance the moment coverage is lost. Waiting means dropout.
- Payer mix diversification: Build commercial contracts, develop out-of-state referral networks, and create a sustainable self-pay model. Medicaid-only operations are high-risk in 2026.
- Retain patients through coverage gaps: The clinical relationship is your strongest asset. If a patient trusts your team, they'll work with you to find a payment solution. If they don't, they'll disappear.
These tactics aren't theoretical. They're what operators in Montana, Minnesota, New York, Arizona, Colorado, Tennessee, and Washington are using right now to stabilize census and protect revenue during ongoing redetermination disruptions.
Understanding the nuances of billing codes like H0012 for non-medical residential detox can also help you maximize revenue across different payer types when Medicaid coverage shifts.
Frequently Asked Questions
Is Medicaid unwinding still happening in 2026?
Yes. While the initial wave of redeterminations occurred in 2023 and 2024, coverage instability continues into 2026. States are still processing backlogs, patients are cycling on and off coverage, and federal funding uncertainty compounds the disruption. For SUD treatment providers, unwinding is an ongoing operational challenge, not a past event.
How does Medicaid loss affect addiction treatment in Mountain West and Pacific Northwest states?
In states like Montana and Washington, Medicaid loss hits particularly hard because of geography and provider network constraints. Rural patients who lose coverage often have no alternative options, leading to treatment dropout. In urban markets like Seattle or Denver, patients may have more commercial or self-pay alternatives, but the financial barrier is still significant.
What should treatment centers do when patients lose Medicaid?
Act immediately. Verify the coverage loss, initiate re-enrollment support, and transition the patient to a financial assistance protocol the same day. Waiting even 48 hours increases dropout risk significantly. Have a clear process that your intake and billing teams can execute without needing management approval.
Which states have the most complex redetermination processes?
New York's OASAS-regulated system and Minnesota's integrated Medical Assistance structure are among the most complex. Arizona's AHCCCS managed care system and Washington's BHASO model also create layered authorization environments that complicate coverage transitions. Simpler fee-for-service states like Montana have less administrative complexity but face different challenges related to provider network capacity.
Protect Your Census and Revenue in 2026
Medicaid unwinding isn't slowing down. Redetermination disruptions are continuing to affect treatment centers across Montana, Minnesota, New York, Arizona, Colorado, Tennessee, and Washington. If you're operating in any of these states, you need systems that protect census when coverage disappears and revenue strategies that don't depend on a single payer.
ForwardCare helps behavioral health and addiction treatment providers navigate complex billing environments, optimize payer mix, and build sustainable revenue operations. Whether you're managing OASAS licensing in New York, Rule 31 compliance in Minnesota, or AHCCCS managed care in Arizona, we understand the state-specific dynamics that affect your bottom line.
If your census is fluctuating because of Medicaid instability, or if you're building a new center and need to model payer mix in a post-unwinding environment, let's talk. We work with operators who need practical, state-specific guidance that translates directly to operational decisions.
Reach out to ForwardCare today. We'll help you build the systems that keep patients in treatment and revenue stable, regardless of what's happening with Medicaid enrollment in your state.
