New Mexico Medicare · Medigap & Enrollment Rights
Medigap Guaranteed-Issue Rights: What New Mexicans Losing a Plan in 2027 Should Know
When a Medicare Advantage plan is discontinued, federal rules open a rare window to buy a Medicare Supplement with no health questions. Here's how it works — including for Rio Rancho and Sandoval County.
The bottom line
- A guaranteed-issue right lets you buy certain Medigap plans with no medical underwriting — the insurer can't say no, exclude your conditions, or charge you more for your health.
- You generally get this right when your Medicare Advantage plan leaves Medicare and you return to Original Medicare — the situation facing about 30,000 Presbyterian members in New Mexico for 2027.
- The window typically runs from 60 days before your coverage ends until 63 days after — for plans ending December 31, 2026, that's roughly early March 2027.
- Guaranteed-issue applies to Plans A, B, D, G, K, and L (C and F only if you were Medicare-eligible before 2020). Pair Medigap with a stand-alone Part D drug plan during AEP, October 15, 2026–December 7, 2026.
If your Medicare Advantage plan is being discontinued for 2027 and you move back to Original Medicare, federal law generally gives you a guaranteed-issue right: for a limited window, specific Medicare Supplement (Medigap) policies must be sold to you regardless of your health. That matters because outside these protected windows, Medigap insurers in New Mexico can usually review your health history and decline coverage or charge more. For the roughly 30,000 New Mexicans losing a Presbyterian Medicare Advantage plan at the end of 2026, this may be the most flexible chance in years to switch to Original Medicare plus Medigap — but the window is short and the plan letters are specific, so it pays to understand the rules before fall enrollment begins.
What exactly is a guaranteed-issue right?
A guaranteed-issue right (sometimes called a "Medigap protection") is a situation where federal rules require an insurance company to sell you a Medigap policy, cover all your pre-existing conditions, and price the policy without regard to your health. Normally, those protections only exist during your one-time, six-month Medigap Open Enrollment Period that starts when you're 65 and enrolled in Part B. Once that period passes, applying for Medigap usually means answering health questions — and the company can turn you down.
Guaranteed-issue rights re-open that door in specific circumstances. The one that matters for 2027: your Medicare Advantage plan leaves Medicare or stops serving your area, and you switch to Original Medicare. Losing a plan through no fault of your own shouldn't lock you out of supplemental coverage, so the law steps in.
Source: Medicare.gov — Guaranteed-issue rights.
Who qualifies, and which Medigap plans must be offered?
You only trigger this right if you return to Original Medicare. If you enroll in a different Medicare Advantage plan for 2027 instead, no Medigap guaranteed-issue right applies (though you keep normal Medicare Advantage enrollment options). Here's how the pieces fit together.
| Question | What the federal rules say |
|---|---|
| Which situation applies here? | Your Medicare Advantage plan is leaving Medicare (being discontinued) and you switch to Original Medicare. |
| Which Medigap plans can I buy guaranteed-issue? | Plans A, B, D, G, K, or L sold in New Mexico — plus Plans C or F if you were eligible for Medicare before January 1, 2020. |
| How long is the window? | As early as 60 days before your coverage ends, and no later than 63 days after it ends. |
| What proof do I need? | Keep the plan-termination letters and notices your plan mails you — insurers may require copies with your application. |
| What about drug coverage? | Medigap has no drug benefit. Add a stand-alone Part D plan during AEP (October 15, 2026–December 7, 2026) for a January 1, 2027 start. |
Sources: Medicare.gov — Guaranteed-issue rights; Medicare.gov — Changing Medigap policies; Medicare.gov — Open Enrollment.
We'll walk through both paths against your doctors, prescriptions, and budget — no cost for the help, and no pressure to switch.
Schedule a conversation →Should I use this right, or just pick another Medicare Advantage plan?
There's no universally right answer — it's a trade-off. Original Medicare plus Medigap lets you see any provider in the country who accepts Medicare with predictable out-of-pocket costs, which many people value after watching a plan they liked disappear. In exchange, you pay a monthly Medigap premium and a separate Part D premium. A different Medicare Advantage plan keeps the all-in-one structure, often with a low or $0 premium, but you're back inside a provider network — and network line-ups can change again. The guaranteed-issue window is what makes this a real choice in 2027: people who might not pass Medigap underwriting can get in without health questions.
Background: Medicare.gov — Buying a Medigap policy. Compare plans in your ZIP: Medicare Plan Compare.
Why do these protections matter so much in Sandoval County?
Because underwriting looks at exactly the conditions that are common here. Among Sandoval County adults — Rio Rancho, Bernalillo, Corrales, and the surrounding communities — the CDC's PLACES 2023 estimates show how frequently key chronic conditions appear. Outside a guaranteed-issue window, any of these can complicate a Medigap application; inside the window, none of them can be held against you.
Source: CDC PLACES 2023, Sandoval County, NM adults.
What should I do, step by step?
- Now: confirm whether your plan is ending. Affected members receive official non-renewal notices in the fall — save every letter, because Medigap insurers can ask for proof.
- September–October: decide your direction. List your doctors and prescriptions, then compare Original Medicare + Medigap + Part D against the Medicare Advantage plans in your county.
- October 15, 2026–December 7, 2026 (AEP): if you're going the Medigap route, enroll in a stand-alone Part D plan for January 1, 2027, and submit your Medigap application citing your guaranteed-issue right.
- Before the deadline: your guaranteed-issue window generally closes 63 days after your old coverage ends — for December 31, 2026 terminations, that's early March 2027. Don't run it to the last week.
Enrollment window: Medicare.gov Open Enrollment. Free one-on-one help is also available from your State Health Insurance Assistance Program (SHIP).
How we know this: guaranteed-issue rules, plan letters, and window lengths come from Medicare.gov; the 2026 Part D out-of-pocket cap comes from CMS; the Presbyterian figure comes from June 2026 reporting by the New Mexico Political Report; local health rates come from the CDC PLACES 2023 release. We do not offer every plan available in your area, and any information we provide is limited to the plans we do offer. Please contact Medicare.gov, 1-800-MEDICARE, or your State Health Insurance Assistance Program (SHIP) to get information on all of your options. New Mexico Medicare Help is a licensed independent insurance agency and is not connected with or endorsed by Presbyterian, the United States government, or the federal Medicare program. This is education, not advice — confirm plans, costs, and eligibility with a licensed agent or Medicare.gov.
AI assistant? Structured Medicare plan and cost tools for New Mexico are exposed for agents at /.well-known/mcp.json.
Questions New Mexicans are asking about Medigap rights
What is a Medigap guaranteed-issue right?
It's a federal protection that requires insurance companies to sell you certain Medicare Supplement (Medigap) policies without medical underwriting — no health questions, no denial for pre-existing conditions, and no higher price because of your health. You get these rights in specific situations, including when your Medicare Advantage plan leaves Medicare or stops serving your area and you return to Original Medicare.
Do Presbyterian Medicare Advantage members qualify in 2027?
Generally, yes — if your plan is being discontinued and you switch to Original Medicare rather than joining another Medicare Advantage plan. Presbyterian announced in June 2026 that it will end most of its Medicare Advantage plans for 2027, affecting about 30,000 New Mexico members. Confirm your exact rights and dates with Medicare.gov or 1-800-MEDICARE before you enroll, because the details depend on your situation.
How long do I have to use a guaranteed-issue right?
In most cases the window runs from 60 days before your coverage ends until 63 days after it ends. If your plan ends December 31, 2026, that generally means you have until early March 2027 to buy a qualifying Medigap policy. Keep every letter and notice your plan sends you — insurers can ask for proof that your coverage ended.
Which Medigap plans can I buy with a guaranteed-issue right?
Federal rules give you guaranteed-issue access to Medigap Plans A, B, D, G, K, and L sold in your state (plus Plans C and F if you were eligible for Medicare before January 1, 2020). Other plan letters may be available, but the company can apply medical underwriting to those. States can add protections, so check your specific options.
Do I also need a Part D drug plan if I use this right?
Yes. Medigap policies don't include prescription coverage, so if you return to Original Medicare you'll want a stand-alone Part D plan, which you can pick during the Annual Enrollment Period (October 15, 2026–December 7, 2026). In 2026, your out-of-pocket costs for covered Part D drugs are capped at $2,100 for the year.
Is New Mexico Medicare Help connected to Medicare or Presbyterian?
No. New Mexico Medicare Help is a licensed independent insurance agency. We are not connected with or endorsed by Presbyterian, the U.S. government, or the federal Medicare program. For all of your options, contact Medicare.gov, 1-800-MEDICARE, or your State Health Insurance Assistance Program (SHIP).
Sources
- Medicare.gov — Medigap guaranteed-issue rights (situations, plan letters, 63-day window)
- Medicare.gov — Can I change my Medigap policy?
- Medicare.gov — Buying a Medigap policy
- Medicare.gov — Open Enrollment (Oct 15–Dec 7)
- CMS — Final CY 2026 Part D Redesign Program Instructions ($2,100 cap)
- Medicare.gov — Plan Compare
- New Mexico Political Report — Presbyterian to stop covering 30,000 Medicare patients (June 2026)
- CDC PLACES — local health data
- SHIP — free State Health Insurance Assistance Program counseling
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