Medicare Coverage Abroad: What Expats Need to Know

A $40,000 Bill With Nowhere to Send It

A 68-year-old retiree in Lisbon has a heart attack, spends four days in a private hospital, and receives a bill for roughly $12,000 to $18,000 — modest by U.S. standards, but not covered by a dollar of Medicare. She has paid Part B premiums every month since she turned 65. It doesn't matter. Original Medicare's rule is blunt: it pays for healthcare delivered outside the United States in exactly three situations, all of them involving inpatient hospital admission, and none of them apply to someone who simply lives in Portugal ([Medicare.gov, "Medicare Coverage Outside the United States," Publication 11037](https://www.medicare.gov/publications/11037-medicare-coverage-outside-the-united-states.pdf)).

That gap is the single most important fact for any American retiree relocating abroad, and it shapes almost every other Medicare decision an expat has to make — whether to keep paying Part B, whether to buy a Medigap policy, and what happens if they ever move back.

The Default Rule: Medicare Stops at the Border

Original Medicare (Part A and Part B) is a domestic program. As a rule, it does not pay for hospital stays, doctor visits, ambulance rides, or any other care received outside the 50 states, D.C., Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands ([Medicare.gov, "Travel"](https://www.medicare.gov/basics/get-started-with-medicare/medicare-basics/travel)). There is no annual cap, no percentage coverage, no emergency-only carve-out for the average expat — coverage is simply absent unless one of the following applies.

The Three Narrow Exceptions

CMS and Medicare.gov define the exceptions precisely, and all require that you be admitted as an inpatient to the foreign hospital ([Medicare.gov, Publication 11037](https://www.medicare.gov/publications/11037-medicare-coverage-outside-the-united-states.pdf)):

1. **A U.S.-based emergency with no domestic option.** You are physically in the United States when a medical emergency occurs, and the closest hospital capable of treating you happens to be across the border in Canada or Mexico.
2. **Alaska-to-Canada transit.** You are traveling by the most direct route between Alaska and another state, without unreasonable delay, when an emergency occurs, and the nearest adequately equipped hospital is in Canada.
3. **U.S. residents near a foreign border.** You live in the United States and a foreign hospital is closer to your home than the nearest domestic hospital able to treat your condition — this applies regardless of whether the situation is an emergency.

A fourth, narrower carve-out covers medically necessary care received on a cruise ship, but only if the ship is in a U.S. port or within six hours of arriving at or departing from one ([AARP, "Will Medicare Cover Me If I Travel Outside the United States?"](https://www.aarp.org/medicare/does-medicare-cover-me-outside-the-us/)). None of these situations describe an American who has relocated to Mexico City, Chiang Mai, or the Algarve. For that population, Part A and Part B coverage is effectively zero once they leave the country listed above.

Even within these exceptions, coverage is limited to the inpatient hospital stay itself. Part B may pay for doctor and ambulance services connected to that covered stay, but it does not independently cover outpatient care received abroad.

Part D Doesn't Travel At All

Medicare Part D prescription drug plans have no network pharmacies outside the United States and no mechanism for reimbursing an out-of-country purchase. If you fill a prescription in Bangkok or Mexico City, you pay the full cash price and cannot submit the receipt to your Part D plan afterward ([Medicare.gov, Publication 11037](https://www.medicare.gov/publications/11037-medicare-coverage-outside-the-united-states.pdf)). Expats who take maintenance medications typically either bring a supply from the U.S., use a local prescriber and pharmacy and pay out of pocket (often cheaper than the U.S. cash price for the same drug), or route refills through a mail-forwarding address during return trips.

Medicare Advantage: Built Around a U.S. Network

Medicare Advantage (Part C) plans are administered by private insurers around defined U.S. service areas — HMO or PPO networks that generally stop at the country's border. Most Medicare Advantage plans do not cover routine or planned care received abroad, and the plans that do offer any international benefit typically limit it to true emergencies or urgent care, defined plan by plan.

For 2026, some carriers have added supplemental "travel" or "passport" benefits — often in the $200–$500 annual range — covering things like telehealth consultations or prescription refills while traveling, and some plans include worldwide emergency/urgent-care coverage as a supplemental benefit. But there is no federal requirement that Medicare Advantage plans cover foreign care at all, and terms vary significantly by carrier and even by plan within the same carrier. Anyone relying on a Medicare Advantage plan while living abroad should request the plan's Evidence of Coverage document and confirm, in writing, what — if anything — is covered outside the United States before departing.

Medigap: The Closest Thing to a Bridge

The most direct piece of the Medicare system that actually pays for care overseas is a Medicare Supplement (Medigap) policy — but only certain standardized plans, and only up to fixed limits. Medigap Plans C, D, F, G, M, and N include a standardized foreign travel emergency benefit, described in Medicare's own guide to choosing a Medigap policy ([Medicare.gov, "Guide to Choosing a Medigap Policy," Publication 02110](https://www.medicare.gov/publications/02110-medicare-guide-to-choosing-a-medigap-policy.pdf)):

• Covers 80% of billed charges for medically necessary emergency care outside the U.S.
• Applies only after a $250 annual deductible
• Capped at a **$50,000 lifetime maximum**
• Applies only if the emergency begins during the **first 60 days** of a trip

That 60-day trigger is the detail that catches long-term expats: the benefit is built for travelers, not residents. Someone who has lived in Ecuador for two years generally cannot invoke the foreign travel emergency benefit for care received there, because they are not on a discrete trip with a start date. Legacy Medigap Plans E, H, I, and J also carried this benefit for people who bought them before those plans stopped being sold to new enrollees in June 2010. Plans C and F, meanwhile, are closed to anyone who became Medicare-eligible on or after January 1, 2020 — those enrollees can only access the foreign travel benefit through Plan D, G, M, or N.

Even a fully engaged $50,000 Medigap lifetime cap is thin protection against a major cardiac event, cancer treatment, or long hospitalization abroad, which is why most financial advisers who work with expats recommend it as a supplement to — not a replacement for — a private international health insurance policy.

Should You Keep Paying Part B While Living Abroad?

This is the decision most expats get wrong, and it hinges on two facts that are easy to conflate: what Part B costs, and what it costs to drop it.

**The cost of keeping it.** The standard Part B premium is $202.90 per month in 2026, up from $185.00 in 2025 — a $17.90 increase — with an annual deductible of $283, up from $257 ([CMS.gov, "2026 Medicare Parts A & B Premiums and Deductibles"](https://www.cms.gov/newsroom/fact-sheets/2026-medicare-parts-b-premiums-deductibles); [Medicare.gov, "2026 Medicare Costs," Publication 11579](https://www.medicare.gov/publications/11579-medicare-costs.pdf)). Higher earners pay more: the Income-Related Monthly Adjustment Amount (IRMAA) applies once modified adjusted gross income exceeds $109,000 for single filers or $218,000 for joint filers, based on income from two years prior (2024 income determines 2026 premiums). At the top IRMAA tiers, the Part B premium reaches $689.90 per month, with an additional Part D surcharge of up to $91.00 per month ([Federal Register, "Medicare Program; Medicare Part B Monthly Actuarial Rates, Premium Rates, and Annual Deductible Beginning January 1, 2026"](https://www.federalregister.gov/documents/2025/11/19/2025-20251/medicare-program-medicare-part-b-monthly-actuarial-rates-premium-rates-and-annual-deductible)).

**The cost of dropping it.** If you decline or drop Part B and later re-enroll without qualifying for a Special Enrollment Period, you pay a Part B late enrollment penalty: 10% of the standard premium for every full 12-month period you went without coverage, added permanently to your premium for as long as you're enrolled ([Medicare.gov, "Avoid Late Enrollment Penalties"](https://www.medicare.gov/basics/costs/medicare-costs/avoid-penalties)). Five years abroad without Part B means a 50% surcharge on top of the standard premium for life, if you ever come back and re-enroll.

**The trap: living abroad is not, by itself, a qualifying event.** A Special Enrollment Period lets you enroll in Part B later without penalty, but it only applies if you or your spouse have health coverage based on *current* employment — an active job, yours or a spouse's, that provides group health coverage. Retirees living abroad on savings, Social Security, or a pension do not qualify for this SEP just because they reside outside the country ([Medicare Interactive, "Medicare Coverage for Those Who Live Abroad"](https://www.medicareinteractive.org/understanding-medicare/health-coverage-options/medicare-and-living-abroad/medicare-coverage-for-those-who-live-abroad-but-plan-to-move-back-to-the-united-states-or-travel-back-frequently)). If you retire at 65, move to Mexico, and drop Part B, you will face the late enrollment penalty if you re-enroll later — there is no automatic pass for having lived overseas.

If you do go this route and later plan to re-enroll, keep records — lease agreements, utility bills, foreign tax filings, entry/exit stamps — that prove continuous residence abroad, since the Social Security Administration may ask for evidence of your living situation when you apply for Part B on return.

A Decision Framework

The math generally comes down to three questions:

1. **Do you plan to return to the U.S., ever, even for extended visits?** If yes, the late enrollment penalty is a real, permanent cost to weigh against years of premiums you'd pay for coverage you can't use abroad.
2. **Do you have access to affordable private international health insurance where you're living?** Countries popular with U.S. retirees — Portugal, Mexico, Panama, Costa Rica — generally have private insurance or public-system buy-in options that cost less than U.S. Medigap and IRMAA-loaded Part B combined, and that actually pay claims locally.
3. **Is your income high enough that IRMAA makes Part B expensive regardless?** For beneficiaries paying $500–$690 a month in Part B premiums for coverage that pays nothing overseas, the arithmetic tilts harder toward suspending Part B and self-insuring through a local or international plan, then accepting a calculated penalty if they return.

There's no universal right answer — a full-time retiree with no intention of returning to the U.S. faces a very different calculation than a digital nomad who splits time between the U.S. and abroad and might need Part B active at short notice.

Action Items Before You Relocate

• **Get your Medigap foreign travel benefit in writing** if you plan to keep a Medigap policy — confirm your plan letter (C, D, F, G, M, or N) and that the 80%/$250 deductible/$50,000 lifetime cap terms apply to your specific policy, since older or state-specific Medigap policies can vary.
• **Request your Medicare Advantage plan's Evidence of Coverage document** before assuming any overseas benefit exists, and get emergency coverage terms confirmed by the carrier directly, not a broker's summary.
• **Price a private international health insurance policy** (providers like Cigna Global, IMG, or Allianz Care are commonly used by American expats) before deciding to drop Medicare Part B — a lapse should be a deliberate substitution, not a gap.
• **Contact the Social Security Administration or your embassy's Federal Benefits Unit before your move** to understand exactly how suspending or keeping Part B will be processed, since enrollment actions for expats route through SSA channels that differ from domestic enrollment.
• **Keep dated proof of foreign residence** (leases, utility bills, foreign tax returns) from day one abroad, in case you need to demonstrate a qualifying absence to avoid the late enrollment penalty later.
• **Recheck your Part A eligibility** if you have fewer than 40 quarters of Medicare-taxed work — Part A costs $311/month with 30–39 quarters or $565/month with fewer than 30 quarters in 2026, versus $0 for those with 40+ quarters, which changes the cost-benefit of any Medicare enrollment decision ([Medicare.gov, Publication 11579](https://www.medicare.gov/publications/11579-medicare-costs.pdf)).

Next Steps

The practical starting point is a conversation with the Social Security Administration (or a State Health Insurance Assistance Program counselor) before you leave the country, not after — enrollment and disenrollment decisions here have permanent financial consequences, and reversing course from abroad is harder than making the right call up front. Pair that conversation with a real insurance quote from an international provider covering your destination country, and treat any Medigap or Medicare Advantage travel benefit as a limited backstop rather than primary coverage. Medicare was built for people living in the United States; expats who plan around that fact, rather than around what they assume Medicare covers, are the ones who avoid a five-figure surprise bill.