Medicare Advantage 2027 plan exits hit 2.9 million seniors
Non-renewal notices must reach members by Oct. 1, and roughly one in ten Medicare Advantage enrollees is in a plan that disappears next year. Health systems inherit the churn.
The Medicare Advantage 2027 plan exits are no longer a forecast. They are a mailing deadline. Plans that will not renew must send written notice to affected members by Oct. 1, 2026, at least 90 days before coverage ends, and research from the Johns Hopkins Bloomberg School of Public Health puts roughly 2.9 million enrollees, about one in ten, in a plan that disappears next year. For health systems, that is a mid-cycle payer mix reshuffle arriving with almost no lead time.
NAIC 2025 Annual Health Industry Commentary. Individual business alone accounted for -$6.5B of the comprehensive line.
| Value (USD billions) | Underwriting gain or loss |
|---|---|
| Comprehensive hospital and medical | -7.1 USD billions |
| Medicare | -3.3 USD billions |
| Medicaid | -1.2 USD billions |
| Medicare Supplement | -0.9 USD billions |
The Oct. 1 notice deadline compresses everything into 10 weeks
The regulatory calendar leaves little room to maneuver. Non-renewal letters land by Oct. 1. Annual Enrollment opens Oct. 15 and closes Dec. 7. Members whose plans exit also qualify for a special enrollment period that extends into February 2027, which means the decision window does not close cleanly at year end. Enrollment questions, eligibility verification failures, and financial counseling requests will keep arriving through the first quarter.
Humana was the first major insurer to name 2027 multi-market exits, its second consecutive year of pullbacks. CFO Celeste Mellet told investors on the second-quarter call that roughly 600,000 members are affected, framing the move as prioritizing higher-performing plans. Analysts expect Humana and UnitedHealthcare to make the largest reductions. A Leerink note circulated this week described 2027 as another year of broad-based industry benefit reductions, pointing to the removal of Part B premium giveback benefits, dental cuts, higher specialist copays, and changed out-of-pocket drug costs.
2027 sets up as another year of broad-based industry benefit reductions, with Humana and UnitedHealthcare likely cutting the most.
Benefit cuts are landing despite a favorable payment year
The counterintuitive part is that CMS finalized 2027 Medicare Advantage payment rates above what it originally proposed in the advance notice, a decision confirmed in April 2026. A better rate year has not stopped the retrenchment. Insurers are treating benefit richness, not top-line revenue, as the lever that restores margin, and they are pulling it in the segments where utilization has run hottest.
Humana has been explicit about the mechanics, tying 2027 margin expansion to ongoing benefit adjustments and targeted plan exits on the way to a stated 2028 commitment of at least 3% sustainable margin. That framing matters for provider negotiations. Exits are not being described as a one-year correction. They are a multi-year portfolio pruning strategy, which suggests 2028 planning should assume further county-level withdrawals rather than a snapback.
A third straight loss year explains the discipline
The financial backdrop is unusually clear this cycle. Mark Farrah Associates, working from NAIC statutory filings, put 2025 underwriting losses across health plans at nearly $10.4 billion, up from $1.7 billion in 2024. Most of the deterioration sat in the Individual and Medicare segments. Medicaid remained unprofitable even as its medical expense ratio improved. NAIC's 2025 annual report shows industry net earnings falling from $9.3 billion to $6 billion, a 0.4% margin, and a combined ratio of 100.6%.
The distribution of pain is what should get executive attention. Healthcare Finance News reported that 43% of national insurers recorded a 2025 operating loss, compared with 14% in 2023. Regional plans are retrenching too. Presbyterian Healthcare Services is dropping most of its Medicare Advantage plans after $59 million in 2025 losses, and Centene exited Arkansas Medicaid expansion. Provider-sponsored plans are not insulated from the same math.
Where the churn hits provider operations
Non-renewals redistribute members three ways: into another plan from the same carrier, into a competitor's plan, or back to Original Medicare with a supplement. Each path carries different consequences. New carrier contracts bring different prior authorization lists, different utilization management vendors, and different network status for the specialists a patient already sees. Original Medicare returns remove the plan-level friction but may leave patients without the dental, vision, and transportation benefits they had budgeted around.
Revenue cycle exposure is the quieter risk. Exiting plans still owe runout on 2026 claims, and collections teams will be chasing entities that are winding down local operations and reassigning staff. Denials and appeals filed in the first quarter of 2027 against a plan that no longer sells in the market tend to move slowly.
Value-based contracts deserve a separate review. Panels attributed under Medicare Advantage shared savings arrangements can lose members without notice when a plan exits a county. That distorts benchmarks, shrinks the denominator for quality measures, and can strand investments in care management staffing built around a specific attributed population. Contract language on membership thresholds and benchmark rebasing is worth reading before December.
What to do before notices reach patients
Start with exposure mapping. Identify which contracted Medicare Advantage plans are non-renewing in your service area, then quantify attributed lives, admissions, and net revenue tied to each. That analysis should be finished before Oct. 15, not after.
Then staff the front end. Registration and financial counseling volumes will spike from October through February as members work through Annual Enrollment and the plan-exit special enrollment period. Insurance verification at the point of scheduling matters more than usual because a January appointment booked in November may carry stale coverage information. Pair that with clinician-facing guidance on which prior authorization rules change under likely replacement plans, so referral patterns do not stall in January.
Finally, use the negotiating window. Carriers pruning weak plans still want strong networks in the markets they keep. Systems that can show where they hold the market for the migrating population have real leverage on rates, prior authorization carve-outs, and attribution protections in value-based terms.
