By Marc Gilman
(800) 927-9326 |
Key Takeaways
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You can technically apply to switch Medigap plans at any time of year — but outside your one-time initial enrollment window, most applicants go through medical underwriting.
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New Hampshire does not have a “birthday rule.” Unlike more than a dozen other states, NH residents don’t get an annual window to switch Medigap plans without health questions.
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New Hampshire lawmakers have considered birthday-rule legislation twice in recent years — neither bill passed, and a 2021 law that originally included one had that provision removed before enactment.
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Guaranteed-issue rights still apply in New Hampshire for specific triggering events, such as losing employer coverage or your insurer leaving the market — just not simply because your birthday rolled around.
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New Hampshire requires insurers to offer Medigap to residents who qualify for Medicare before 65 due to disability, and gives them a second guaranteed-issue enrollment window when they turn 65.
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Because most New Hampshire carriers use issue-age pricing, the plan and carrier you choose during your initial enrollment window matters more here than in states where switching later is easier.
How Does Switching Medigap Plans Work in General?
Unlike Medicare Advantage and Part D, Medigap doesn’t have an annual open enrollment period. Instead, federal law guarantees you one enrollment window in your lifetime: the six months starting when you’re at least 65 and enrolled in Medicare Part B. During that window, no insurer can deny you a policy or charge you more based on your health.
After that window closes, you can still apply to switch Medigap plans — insurers just aren’t required to accept you. Most will ask health questions, and depending on what they find, you could be accepted at standard rates, accepted with a higher premium, approved with a waiting period of up to six months before a preexisting condition is covered, or denied outright. It’s worth shopping around periodically anyway, since identical coverage under the same plan letter can vary meaningfully in price from one carrier to the next — but outside your initial window, price isn’t the only factor; whether you can qualify at all comes first.
One structural note worth knowing: Medigap policies are individual coverage. Spouses can’t share a single policy — each spouse who wants Medigap needs to enroll separately.
Does New Hampshire Have a Birthday Rule?
No. A “birthday rule” gives existing Medigap policyholders a window each year, usually 30 to 63 days around their birthday, to switch to a different plan with equal or lesser benefits without medical underwriting. As of 2026, more than a dozen states have adopted some version of this protection, and a few — Connecticut and New York among them — go further, offering guaranteed-issue Medigap enrollment year-round with no birthday window required at all. Massachusetts, Maine, and Vermont have their own expanded protections beyond the federal minimum as well.
New Hampshire isn’t one of them, and it isn’t for lack of legislative attention. Lawmakers introduced SB646 in 2020 and HB774 in 2025, both aimed at expanding Medigap consumer protections — neither passed. A separate bill, SB124, was enacted in 2021 and originally included a birthday-rule provision, but that piece was removed during the legislative process. What survived is narrower: insurers can no longer continue charging a disabled Medigap enrollee the higher under-65 rate once that person turns 65. Useful, but it doesn’t give NH residents an annual no-questions-asked switching window.
What Protections Exist for Enrollees Under 65?
New Hampshire is on the federal list of states that require insurers to offer at least one Medigap policy to residents who qualify for Medicare before 65 due to disability — roughly one in ten NH Medicare beneficiaries falls into this group. Insurers can still charge these enrollees more, and can generally use medical underwriting, but they can’t refuse coverage outright the way insurers in non-listed states can. These enrollees also get a second full six-month enrollment window when they turn 65, giving them a fresh guaranteed-issue opportunity to switch to any standard plan without health questions at that point, on top of whatever coverage they secured earlier.
What Guaranteed-Issue Rights Do New Hampshire Residents Still Have?
Even without a birthday rule, New Hampshire residents retain the federal guaranteed-issue protections that apply nationwide. These are triggered by specific events, not by the calendar:
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Your Medigap insurer becomes insolvent or otherwise stops offering coverage.
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You lose employer or union coverage that was paying secondary to Medicare.
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You’re enrolled in a Medicare Advantage plan and move outside its service area, or the plan stops serving your area.
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You enrolled in Medicare Advantage for the first time and, within 12 months, decide to switch back to Original Medicare — this “trial right” lets you pick up a Medigap policy without underwriting.
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You had Medigap coverage, dropped it to try Medicare Advantage for the first time, and switch back within that same 12-month trial window.
Outside of these triggers, a New Hampshire resident who wants to switch Medigap plans or carriers should expect to go through underwriting.
This trigger has been especially relevant lately: recent Medicare Advantage carrier exits and network changes across New Hampshire counties have left a number of residents needing to move off an Advantage plan that no longer serves their area. If that happens to you, it activates guaranteed-issue rights into a Medigap plan — no health questions required.
A consumer protection worth knowing: the New Hampshire Insurance Department advises that Medigap premiums should never be paid in cash. Pay by check, money order, or electronic transfer made out directly to the insurance carrier — never to an individual agent. The Department’s Consumer Services unit (603-271-2261, or 1-800-852-3416 in-state toll-free) and the state’s free ServiceLink counseling program (866-634-9412) are both available if you want an independent, no-cost second opinion on any plan or rate question.
Why Does the Initial Enrollment Decision Matter More in New Hampshire?
Most New Hampshire Medigap carriers price policies using issue-age rating, which locks in your base premium according to your age when you first enroll — generally more favorable over time than attained-age pricing, where premiums climb as you age regardless of when you bought the policy. That’s good news at the outset. But it also means the plan and carrier you choose during your six-month window carries more long-term weight here than it would in a birthday-rule state, where a bad initial choice can be corrected annually without a health screen. In New Hampshire, getting it right the first time is the more reliable path, since a later change generally depends on qualifying medically.
Where Does Insurance Planning Fit In?
This is exactly the kind of decision worth working through with a licensed advisor before your enrollment window opens rather than after — comparing carriers, premium histories, and plan letters while you still have guaranteed-issue leverage, rather than discovering the trade-offs only when you try to switch later and find underwriting standing in the way.
What To Do Next
If you’re approaching your Medigap enrollment window, or you’ve been thinking about switching plans and aren’t sure whether you’d need to qualify medically, it’s worth a conversation before you act. Gilman Agency can walk you through your options and help you understand exactly where you stand under New Hampshire’s rules.
Call us at (800) 927-9326 or email to schedule a review.
Sources: Centers for Medicare & Medicaid Services and National Association of Insurance Commissioners, “Choosing a Medigap Policy” (CMS Product No. 02110, March 2026); David Rodeck, “The Rules for Making a Medigap Switch,” Kiplinger (updated November 2025); New Hampshire Insurance Department, “New Hampshire’s Guide to Medicare Supplement Insurance”; healthinsurance.org, “Medicare in New Hampshire”; MedicareFAQ, “Best Medicare Supplement Plans in New Hampshire 2026”; SelectQuote, “Medicare Supplement Plans in New Hampshire (Medigap) 2026.”
