Medicare Advantage SNF denials are frequently reversed on appeal while plans shrink coverage. The dual squeeze hits skilled nursing census and revenue. This is part II of a three-part series. Part I is here: https://rhislop3.com/medicare-advantage-regional-pullbacks/ Part III will follow in a couple of days…..by Reginald Hislop, III
The first half of the Medicare Advantage story this plan year was geographic. The two largest insurers are leaving more counties than they enter, 122 counties across 13 states now have no MA plan at all, and about 2.6 million enrollees are in plans being terminated for 2026. That is the part of the story you can see on a map.
The second half is the part that does not show up on a map, and it is the part that matters more to the skilled nursing operator. Even where a plan is not leaving, it is making it operationally harder to admit and get paid for the patients it does cover. The two trends run in the same direction, and a facility that only tracks the geographic pullback will miss the one that is already inside its authorization queue.
The Medicare Advantage denial pattern that reverses on appeal
The clearest evidence is Medicare Advantage prior authorization denials, and specifically the appeal data. An HHS Office of Inspector General report released in June 2026 found that Medicare Advantage plans overturn nearly 95 percent of their prior authorization denials for skilled nursing facility admission on appeal. That number is not a rounding error. It is a statement that the initial denials were, in the overwhelming majority of cases, wrong on the merits — and were only corrected after a beneficiary fought the ruling. Medicare Advantage Organizations Overturned Nearly All Appealed Prior Authorization Denials for Skilled Nursing Facility Admission, Raising Concerns About Initial Denials | Office of Inspector General | Government Oversight | U.S. Department of Health and Human Services
That should not be mistaken for diligence. A payer that denies a post-acute admission and then reverses its own decision 95 percent of the time is not applying clinical judgment. It is applying delay, and betting that some share of beneficiaries will not appeal at all. The capacity for a facility to carry a patient through that appeal is the difference between an admitted resident and a denied one.
The Medicare Advantage payers doing it the most
A companion OIG report puts the variation on the record. UnitedHealth, Humana, and CVS Health had significantly higher denial rates than other MA organizations in 2024. Across MA organizations, 36 percent of long-term care hospital denials and 43 percent of inpatient rehab denials were overturned on appeal, and individual inpatient rehab facility overturn rates ranged from 14 percent to 86 percent. The spread is the point. A facility whose payer mix leans toward the high-overturn plans is running a predictable loss of census and cash that has nothing to do with clinical acuity. The Medicare Advantage denial overturn rate is the metric that separates the plans that are managing care from the plans that are managing delay. The Three Largest Medicare Advantage Organizations Denied Requests for Long-Term Acute Care and Inpatient Rehabilitation at Some of the Highest Rates | Office of Inspector General | Government Oversight | U.S. Department of Health and Human Services
The industry has begun to say this out loud. AHCA/NCAL’s new president framed it directly in a January 2026 outlook: Medicare Advantage post-acute care is disproportionately affected by prior authorization practices, and the denials are frequent and often reversed, meaning they should never have been issued in the first place. With more than half of eligible seniors now in Medicare Advantage, the position is that clinical decisions belong with medical professionals and patients, not with AI and insurers.
The other side of the friction is the hospital one. A hospital executive made the same point from the discharge end: hospitals are holding patients longer while waiting for Medicare Advantage authorizations or in-network placement. The denial practice does not just cost the SNF an admission. It backs patients up in the hospital bed, which raises acuity and length of stay at both ends of the transfer.
The Medicare Advantage enrollment effect that removes the question entirely
The deeper data point is that MA does not just deny post-acute care. It reduces it. A five-state academic study found SNF admissions denied Medicare Advantage are part of a broader pattern: skilled nursing admissions fell 17.5 percent and inpatient rehab admissions fell 30.6 percent after beneficiaries enrolled in Medicare Advantage, with no corresponding increase in home health use. The decline was not a redirection to a more appropriate setting. It was a reduction in institutional post-acute care, full stop.
That figure changes the argument. The denials are not a claims-processing problem that can be fixed at the appeal desk. They are part of a structural shift in which MA systematically reduces the institutional post-acute setting as a destination for its enrollees. The appeal statistics measure the friction. The enrollment study measures the outcome of that friction over time: fewer SNF admissions, fewer rehab admissions, and no compensating shift elsewhere.
What this means for the SNF operator
The two stories collapse into one. Medicare Advantage is shrinking its geographic footprint in rural and low-density counties, and it is making denials more frequent in the counties where it remains. A facility does not need to sit in one of the 122 zero-plan counties to feel the effect. It only needs a payer mix weighted toward the plans with the high overturn rates and the high initial denials. The direct effect on Medicare Advantage skilled nursing census is the number that will show up in the daily reports before any policy correction lands.
The operating consequence is that MA-driven census and revenue are becoming less predictable at the same time the plans themselves are becoming less stable. An operator who was counting on MA volume to offset the shift in the fee-for-service book is now carrying two risks at once: the plan may leave the county, and if it stays, it may deny the admission and only pay after an appeal.
The response is not to wait for the policy to change. It is to treat MA admission as a managed-care negotiation rather than a clinical admission, and to build the documentation and appeal capacity on the front end before the denial lands. The facilities that hold census in this environment will be the ones that file the prior authorization with the same rigor they would reserve for a survey, knowing that the denial is coming and that the reversal is the real decision point.
Something to consider
The geographic exit is the part of the Medicare Advantage pullback that gets the headlines. The denial pattern is the part that has been running inside every authorization queue for years. Both are the same story: the plans are reducing their exposure to Medicare Advantage post-acute care, in the counties they leave and in the admissions they block. The operator who treats them as one problem will be the one who understands what is actually happening to the census.
MA is simultaneously (a) shrinking its own geographic footprint and (b) making it operationally harder to admit and get paid for the patients it does cover. Both trends push in the same direction for SNF operators: less predictable MA-driven census and revenue, regardless of which specific county a facility sits in.
