Medicare stops at the border. Here's what retirees do instead
Almost never. Medicare's own fact sheet lists three narrow exceptions, none of which cover living in Mexico. How Medigap's travel cover works, the Part B decision, and the healthcare options people actually use.
The short answer: almost never.
Medicare only pays for care outside the US in three narrow situations, all involving a foreign hospital that's closer than the nearest US one while you're in, or live in, the US. Living in Mexico or visiting it isn't one of them. Most Medigap plans add limited emergency cover for trips, but for day-to-day healthcare in Mexico you'll pay cash or use other insurance.
This guide is for US citizens and residents on Medicare, which is the one group this question applies to. It covers what Medicare's own rules say, how Medigap's travel cover works, the Part B decision people agonize over, and the options retirees in Mexico actually use.
What Medicare covers outside the US
Medicare's fact sheet "Medicare Coverage Outside the United States" (April 2026) is blunt: "In most situations, Medicare won't pay for health care or supplies you get outside the U.S." It lists three exceptions:
- You're in the US when you have a medical emergency, and the foreign hospital is closer than the nearest US hospital that can treat you.
- You're traveling through Canada between Alaska and another state, and the Canadian hospital is closer.
- You live in the US and the foreign hospital is closer to your home than the nearest US hospital that can treat you.
The first and third can apply right at the Mexican border. None of them applies once you're living or traveling in Mexico. Even when they do apply, Medicare only covers inpatient hospital care and the doctor and ambulance services around it, and foreign hospitals don't have to file claims for you. You'd pay up front and claim it back.
Two more things from the same fact sheet that catch people out:
- Prescriptions: "Medicare plans can't cover drugs you buy outside the U.S."
- Dialysis isn't covered outside the US unless it's part of a covered inpatient stay.
What Medigap adds
If you have a Medicare Supplement (Medigap) plan, it may include foreign travel emergency cover. According to the same fact sheet, most plans (C, D, F, G, M and N among those sold today) cover it on these terms:
| Term | What it means |
|---|---|
| 80% of billed charges | You pay the other 20%. |
| $250 deductible a year | You pay the first $250 yourself each year. |
| $50,000 lifetime limit | For all foreign emergencies combined, ever. |
| Only in the first 60 days of a trip | The emergency has to begin within 60 days of leaving the US. |
| Emergencies only | Routine care, check-ups and ongoing treatment aren't covered. |
That's useful for a two-week vacation. For a winter in Mexico it's partial at best, because anything after day 60 isn't covered. For living in Mexico it isn't a health plan at all.
Medicare Advantage plans follow Medicare's rules, but some cover extra care abroad. Check with your plan before you travel.
The Part B decision
Part B has a monthly premium, and people who move to Mexico often ask whether to keep paying it for coverage they can't use there. The trade-off:
- If you drop Part B and want it back later, you can only sign up during the General Enrollment Period, January 1 to March 31, with coverage starting the month after you sign up. And you pay a late enrollment penalty: an extra 10% on the premium for each full year you could have had Part B, which for most people lasts for life.
- If you keep it, you're covered whenever you're in the US: a trip back for treatment, a family emergency, or a later move home.
Many retirees in Mexico keep Part B as their plan for anything serious, and use Mexican healthcare for everything else. Others, especially those who don't expect to go back, drop it and accept the penalty risk. Part D (drug coverage) has its own late enrollment penalty, so think about it the same way. Before deciding, look at your own situation with Medicare (1-800-MEDICARE) or a licensed advisor.
What retirees in Mexico actually use
- Paying cash for routine care. Private doctor visits, tests and many procedures cost a fraction of US prices, and plenty of people simply pay as they go.
- Mexican private health insurance for anything big. Many insurers won't issue a new policy past a certain age, so if you're near that limit, look into it before you move. Pre-existing conditions are usually excluded at first.
- IMSS voluntary enrollment, Mexico's public health system, open to residents for an annual fee. It has waiting periods and exclusions, and it's mainly a low-cost backstop.
- International health insurance, which can cover both Mexico and the US. It's expensive at older ages, but some people prefer it to depending on Part B.
- Medical evacuation or air-ambulance memberships, for people who want the option of being flown back to the US for treatment.
Most people combine two of these: cash for everyday care, plus one plan for something serious. ResidencyMexico has a guide to healthcare for new residents covering IMSS and private insurance costs. I run that site too.
A simple way to decide
- Short trips: Medigap's travel cover or a travel insurance policy is enough. Read the policy, because travel insurance doesn't always include health cover.
- Winters in Mexico: Medigap stops after day 60, so add travel medical cover for the rest of the stay.
- Living in Mexico: plan on Mexican care for daily life, choose one plan for something serious, and decide deliberately about Part B, knowing the penalty if you change your mind.
Sources
- Medicare.gov, Medicare Coverage Outside the United States (CMS Product No. 11037, April 2026).
- Medicare.gov, Avoid late enrollment penalties.
- Medicare.gov, Travel outside the U.S.
Last checked October 2, 2026. This is general information, not insurance or financial advice. Medicare rules change, so confirm your own situation with Medicare or a licensed advisor. If something here doesn't match your experience, please tell me.
