His Medicare Advantage Trial Right Lasted 12 Months. At Month 14, Medigap Could Say No.

A 66-year-old in Ohio chose a zero-premium Medicare Advantage plan when he turned 65. He liked the gym benefit. He liked it less when his cardiologist left the network and the plan twice denied prior approval for a heart catheterization. He remained enrolled for 14 months before trying to return to Original Medicare with Medigap Plan G. This time, the applications came with health questions. Two insurers declined him. Another offered coverage at a substantially higher premium.

His heart condition had not changed during those final two months. The insurer’s right to ask about it had.

The First Year Is Different

Someone who joins Medicare Advantage when first eligible for Medicare at 65 generally receives a federal trial right. During the first 12 months, the member can leave the plan, return to Original Medicare, and buy any Medigap policy sold in the state without being rejected or charged more because of health. That first year is more than a cooling-off period. It may be the last federally protected opportunity to reverse the original choice after seeing how the plan handles specialists, referrals, prior approval, and travel.

The timing has one important nuance. A Medigap application can generally be submitted beginning 60 days before Medicare Advantage coverage ends and continuing for 63 days afterward. Someone who leaves Advantage within the first 12 months may therefore complete the Medigap application after the anniversary and still retain the protection. Our Ohio member did not leave within that first year. He stayed enrolled through month 14. By then, the federal trial right had passed.

What Changes After Month 12

Once that protection ends, insurers in most states may use medical underwriting unless another guaranteed-issue right applies. Applications can ask about recent cancer treatment, heart disease, stroke, chronic lung conditions, or diabetes complications. Each company sets its own standards and lookback periods. The result is not an automatic rejection. One insurer may decline a condition another accepts, and premiums can vary substantially. But the health record that was off-limits during the trial period can now determine whether coverage is offered and what it costs.

That matters because Original Medicare has no annual ceiling on out-of-pocket spending. After the Part B deductible, beneficiaries generally owe 20% of covered outpatient costs. Plan G covers most of those gaps, leaving the Part B deductible to the policyholder. Without a supplement, returning to Original Medicare can trade a restrictive network for open-ended cost-sharing.

State Rules May Offer Another Door

Federal law supplies the trial right, but states can provide additional opportunities. Connecticut and New York offer broad year-round Medigap access. Massachusetts and Maine provide wider protections of their own, although the plans and enrollment periods differ. Other states have birthday or anniversary windows, but those commonly help people who already hold Medigap and want to change policies. They may not help someone trying to leave Medicare Advantage.

Plan termination, relocation outside a service area, and certain other coverage changes can also create federal guaranteed-issue rights. A State Health Insurance Assistance Program counselor or state insurance department can identify the rules that fit the member’s circumstances without selling a policy.

Before the First Year Ends

If the plan is already showing its rough edges, three steps can preserve the exit:

1. Find the coverage effective date. Mark months 10, 11, and 12 rather than relying on a birthday or enrollment anniversary remembered loosely.
2. Arrange the Medigap coverage before completing the move. Confirm the policy, premium, and effective date in writing so leaving Advantage does not create an uninsured gap.
3. If the year has passed, keep looking. Compare several insurers and check for state protections or another guaranteed-issue event. One rejection does not establish what every carrier will do.

The extra two months did not change his heart condition. They changed whether a Medigap insurer was allowed to use it. That is what makes the first year of Medicare Advantage a trial in more than name.