Medicare Supplement

Medigap in Corpus Christi for 2026: the plan-letter rules, Part B reset and rate filings to check

Corpus Christi, Texas — If you are shopping for a Medicare Supplement policy on the Coastal Bend this fall, a few moving parts are worth knowing before you sign anything for 2026. The federal rules about which plan letters you can buy have not changed, but the Part B deductible that shapes Plans G and N resets every January, Texas insurers file new rates each year, and the list of companies selling in your ZIP code can shift from one year to the next.

Corpus Christi sits in Nueces County, and while Medigap policies in Texas are regulated at the state level, the specific companies and prices you see depend on your ZIP code. Here is a plain-English look at what is changing — and what is not — for the coming year.

The plan-letter rules have not changed for 2026

Medigap policies are standardized by the federal government, which means a Plan G from one company covers the same core benefits as a Plan G from any other company. What differs is the price and the customer service.

If you are newly eligible for Medicare today, you can choose from Plans A, B, D, G, high-deductible G, K, L, M, and N. Plans C and F remain available only to people who were eligible for Medicare before January 1, 2020. That cutoff is not new — it took effect in 2020 — but it still surprises people who assumed a family member's plan letter would be available to them.

The Part B deductible resets January 1

Plans G and N are the two most commonly purchased letters today, and both are designed around the annual Part B deductible. With Plan G, you pay that deductible out of pocket each year, and the plan picks up nearly everything else Medicare-approved after that. Plan N works similarly, with a few added copays for office and emergency room visits.

The Part B deductible amount is set by the federal government and resets every January 1. When you compare Plan G quotes for 2026, remember you are comparing what you pay the insurer — the deductible itself is the same dollar figure no matter which company sells you the policy.

Rate-filing season in Texas

Medigap premiums in Texas are not frozen. Insurers file proposed rate changes with the Texas Department of Insurance, and those filings typically take effect on the policy's anniversary date rather than on January 1. That is why two neighbors with the same plan letter from the same company can pay different premiums — their renewal months are different.

Before you renew, it is worth checking the Texas Department of Insurance Medigap rate guide, which lists premiums by company and by age band. If your premium has climbed noticeably, you have the right to shop other companies; be aware, though, that outside your one-time Medigap Open Enrollment Period, insurers in Texas can use medical underwriting to accept, decline, or price your application.

Insurers entering or leaving the Texas market

The roster of companies selling Medigap in Texas shifts modestly from year to year. Some carriers pull out of the individual market, some enter, and some stop selling new policies while continuing to service existing ones (a "closed block"). If your company closes its block, your coverage does not disappear, but future rate increases may look different from what a company with a growing book of business would file.

There is no single public list of every insurer selling Medigap in Corpus Christi ZIP codes, so the most reliable check is the Medicare.gov Medigap policy search — enter your ZIP code and it returns the companies currently offering each plan letter in your area.

How to check what applies to you

Three free, unbiased sources cover almost every Medigap question a Corpus Christi resident will have:

• Medicare.gov Medigap policy search — enter your ZIP code to see plan letters and companies available to you.
• Texas Department of Insurance — publishes the annual Medigap rate guide and handles complaints.
• Texas SHIP (the state's free Medicare counseling program) — one-on-one help by phone or in person, at no cost.

You can also call 1-800-MEDICARE (1-800-633-4227), 24 hours a day, seven days a week.