She Pays $260 a Month for Plan G. The Same Insurer Sells a Cheaper Version of It, and Getting In Means Clearing Its Health Questions.

A 72-year-old opens her Medigap renewal and sees her Plan G premium has reached $260 a month. Out of curiosity she calls the same insurer’s sales line and asks what that same policy costs a 72-year-old woman in her ZIP code today. The number she hears is materially lower, for coverage that’s identical by law. Same brand. Same plan letter. Same ZIP. Same age. Different price.

To move from her rate to the lower one, she has to reapply. And outside a federal or state guaranteed-issue window, that means answering health questions and letting an underwriter decide. That’s the lockout nobody explained at 65.

Two Different Things Are Making Her Premium Higher

Every Plan G covers the same Medicare gaps by federal law. Price is the variable, and two separate forces are pushing hers up. Keeping them apart is the whole analysis. The first is pricing method, and carriers use three. Community-rated policies don’t factor in age at all, though premiums still vary by insurer, location, tobacco use and available discounts. Issue-age policies lock the price to the age at purchase. Attained-age policies climb as the policyholder gets older. Most Plan G sold today is attained-age or a hybrid of the two. On an attained-age policy, a 72-year-old pays more than a 65-year-old for reasons that have nothing to do with blocks or underwriting. That’s the contract working as written.

The second is the closed block. Carriers stop selling one version of Plan G, open a new one under a different filing or subsidiary, and quote competitively to new buyers. The old block ages together, claims experience deteriorates, and rate increases land hard on the people still inside. The new block stays cheaper.

Here’s the comparison that actually isolates it: her old block’s rate at 72 against the same carrier’s current block at 72. If the current block is meaningfully cheaper for a woman her age in her ZIP, that spread is the closed block, not the calendar. What she cannot do is buy back the age-65 price. A new policy is rated at her current age. Underwriting might get her into the cheaper block. It will not get her a 65-year-old’s premium.

The Health Questions That Decide It

Applications vary by carrier, but a standard Plan G application asks a host of questions. These involve a walker or wheelchair use, hospitalization in the past two years, surgery that’s been recommended, insulin, stroke, cancer treatment, congestive heart failure, COPD and kidney disease, among others.

A yes to a knockout question ends the application. A yes to a softer one can mean a rate-up or a postponement rather than a flat no. Outcomes are carrier-specific, and lookback periods differ: a stent or a knee replacement might draw a decline at one carrier, a postponement at another, and a clean approval at a third once enough time has passed. One decline is not a permanent verdict, and it is not a decision from the whole market.

For someone who clears the questions, the savings compound every month. For someone who doesn’t, the old block’s rate keeps climbing. Current estimates put the 2027 Social Security COLA in the mid-3% range, with the official figure due from the Social Security Administration next month. Closed-block increases routinely run several times that, alongside the IRMAA surcharges and coverage gaps we mapped in a free guide to Medicare’s hidden bills.

Your State Decides Whether the Door Opens at All

This is the part that varies most, and it’s worth checking rather than assuming. Connecticut and New York require Medigap to be issued year-round without underwriting. Massachusetts runs an annual open enrollment period. Maine provides an annual guaranteed-issue window on one plan. Minnesota added annual guaranteed-issue protections effective in 2026.

A growing group of states run birthday rules, letting existing policyholders switch to an equal or lesser plan around their birthday with no health questions. A current compilation lists California, Idaho, Illinois, Indiana, Kentucky, Louisiana, Maryland, Nevada, Oklahoma, Oregon, Utah, Virginia and Wyoming. The list has grown over the years, so any framing you remember from a few years ago is probably out of date, including your own.

What to Do Sooner Than Later

The renewal notice is fixed. Whether you have a route out of it depends on three details you can find out:

• Get an apples-to-apples quote. Pull the renewal, note the plan letter, and ask the same carrier’s current sales agent what that letter costs at your age, in your ZIP, with your tobacco and household-discount status. A dramatically lower number is the closed block showing itself.
• Check your state’s rules before you check your health. Year-round issue, an annual window or a birthday rule changes the question from “will they take me” to “when do I apply.” Your state insurance regulator or SHIP counselor can confirm it for free.
• If underwriting applies, shop questions, not just prices. Carriers ask different things and look back different distances. A decline at one is information about that carrier, not a closed market.
• Keep the existing policy until the new one is issued. There’s no reason to create a coverage gap while an application is pending.

Identical coverage at two prices is the system working exactly as filed. The only question is which side of the filing you’re standing on.

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