Medicare coverage stops at the U.S. border for most situations

Original Medicare (Parts A and B) does not cover medical care you receive outside the United States, with very limited exceptions. If you travel abroad and need a doctor, hospital, or prescription filled, Medicare will not pay for it. You will be responsible for the full cost unless you have purchased separate travel insurance or your Medicare Advantage plan includes international coverage.

The exceptions are narrow. Medicare will cover care in Canada or Mexico only if you are in the U.S. and the foreign hospital is closer to your home than any U.S. hospital that can treat you. Medicare also covers dialysis if you are a U.S. citizen traveling temporarily abroad and need emergency treatment. Beyond these specific situations, you are uninsured once you leave the country.

Key Takeaways

  • Original Medicare does not cover any medical care outside the United States except in rare cases involving Canada or Mexico when a U.S. hospital is farther away.
  • Some Medicare Advantage plans include limited international coverage, but you must check your plan documents to know what is covered and where.
  • Travel insurance designed for seniors can cover emergency medical care abroad, but you must purchase it before you leave the U.S.
  • If you live part of the year outside the U.S., you may need to report this to Medicare and understand how it affects your coverage and enrollment.
  • Prescription medications filled abroad are not covered by Medicare, and you cannot bring large quantities of medication back into the U.S. without a valid prescription.

How Original Medicare handles care in Canada and Mexico

Medicare will pay for inpatient hospital care in Canada or Mexico only under one circumstance: you must be in the U.S. when the need for care arises, and the Canadian or Mexican hospital must be closer to your home than any U.S. hospital that can provide the treatment. This is a practical rule designed for people living near the border, not a general travel benefit.

To use this exception, you must be admitted to the hospital as an inpatient (staying overnight), not treated in an emergency room or outpatient clinic. Medicare will pay the hospital bill at the rate it would pay a U.S. hospital, which is often less than what the hospital charges. You are responsible for any difference. Physician services and other care related to that admission may also be covered under the same conditions.

Dialysis is treated differently. If you are a U.S. citizen and you travel temporarily outside the country, Medicare will cover emergency dialysis treatment. This exception exists because dialysis is a life-sustaining treatment and missing doses creates when ready danger. You should contact your dialysis center before traveling to arrange coverage and to understand what paperwork you will need.

What Medicare Advantage plans may cover abroad

Some Medicare Advantage plans (Part C) include international coverage, but the scope and limits vary widely by plan and by year. A few plans cover emergency care anywhere in the world. Others cover care only in specific countries or only for a limited number of days. Some plans cover nothing outside the U.S. at all.

You must read your plan's coverage document to know what applies to you. The document is called the "Evidence of Coverage" or "Summary of Benefits and Coverage." It will state whether international coverage is included, which countries are covered, what types of care are covered (usually emergency only), how many days, and what you pay out of pocket. If the document does not mention international coverage, assume it is not included.

If you are thinking about switching to a Medicare Advantage plan and international travel matters to you, call the plan before you enroll and ask directly whether emergency care abroad is covered. Get the answer in writing if possible. Plans change their coverage each year, so even if your current plan covers international care, next year's version might not.

Travel insurance as a backup for medical emergencies

Travel insurance designed for seniors can cover emergency medical care, emergency dental care, and emergency medical evacuation while you are outside the U.S. These policies are sold by travel companies and insurance carriers, not by Medicare. They are separate from your Medicare coverage and cost extra.

Travel insurance works differently than Medicare. You pay a premium upfront (usually $100 to $300 for a two-week trip, depending on your age and the coverage level). When you need care abroad, you pay the provider out of pocket and then submit receipts to the insurance company for reimbursement. Some policies have a deductible, and most have a maximum benefit amount — often $100,000 to $250,000 for emergency medical care.

You must purchase travel insurance before you leave the U.S. If you wait until you are already abroad, you cannot buy it. Some policies exclude coverage for pre-existing conditions unless you purchase within 14 days of your first trip deposit. Read the policy details carefully to understand what is and is not covered, and keep all receipts and medical records if you need to file a claim.

Prescription medications and Medicare coverage abroad

Medicare does not cover prescriptions filled at pharmacies outside the U.S. If you need medication while traveling, you will pay the pharmacy's full price. Prices for the same medication vary dramatically by country — some countries have lower prices than the U.S., and others have higher ones.

Before you travel, ask your doctor for a written prescription you can carry with you. Some countries recognize U.S. prescriptions, and some do not. A few countries require a local doctor to write a new prescription even if you have one from home. Research the rules for the specific country you are visiting.

Do not assume you can bring large quantities of medication back into the U.S. U.S. Customs allows you to bring a 90-day supply of medication for personal use if you have a valid prescription, but anything beyond that may be seized. Controlled substances (such as opioids or benzodiazepines) have stricter limits. If you are traveling for an extended period and need to refill medications, work with your doctor and pharmacy before you leave to arrange mail delivery or a plan to refill when you return.

Reporting extended time outside the U.S. to Medicare

If you spend more than half the year outside the U.S., you may need to report this to Medicare. Your Medicare coverage is based on the assumption that you are a U.S. resident. If you move abroad permanently or spend extended time outside the country, your coverage and enrollment rules may change.

Contact Medicare at 1-800-MEDICARE to report a change in your residency or to ask how extended travel affects your coverage. If you are a U.S. citizen living abroad, you can keep Medicare Part A and Part B, but you cannot enroll in a Medicare Advantage plan or a Prescription Drug plan (Part D) while you are outside the U.S. If you are a permanent resident (green card holder) living abroad, different rules explore.

If you leave the U.S. and do not report it to Medicare, your coverage may be suspended or terminated. If you return and want to re-enroll, you may face late enrollment penalties. It is better to contact Medicare before you go than to deal with coverage gaps later.

Planning ahead for international travel on Medicare

Before you book a trip outside the U.S., take these steps. First, contact Medicare or your Medicare Advantage plan to confirm what is and is not covered in the country you are visiting. Second, research whether travel insurance is available for your destination and your age, and purchase it if you decide you want it. Third, ask your doctor for written prescriptions and a summary of your medical conditions in case you need care abroad.

Bring your Medicare card and any insurance documents with you. Some foreign providers will not treat you without proof of insurance or payment upfront. Keep receipts for any medical care you receive, because you may need them to file a claim or to prove to Medicare that you paid out of pocket. If you have a medical emergency, contact your travel insurance company (if you have it) before you seek care, because some policies require pre-authorization.

Frequently Asked Questions

Can I use my Medicare card at a hospital in Europe?

No. Your Medicare card is not recognized outside the U.S. European hospitals will not accept it as proof of insurance. You will need to pay out of pocket and then seek reimbursement from travel insurance if you have it, or absorb the cost yourself. Some countries have reciprocal agreements with the U.S., but Medicare is not part of those agreements.

What happens if I have a heart attack while traveling in Mexico?

You will receive emergency care, but you will be responsible for paying the hospital bill unless you have travel insurance. Original Medicare will not cover it because the exception for Mexico applies only when you are in the U.S. and the Mexican hospital is closer than a U.S. option. If you have a Medicare Advantage plan with international coverage or travel insurance, contact that company when ready to report the emergency and ask about coverage.

Can I get my Medicare prescriptions filled in Canada to save money?

You can purchase medications in Canada, but Medicare will not reimburse you. You will pay the Canadian pharmacy's price out of pocket. U.S. Customs allows you to bring back a 90-day supply of medication for personal use if you have a valid prescription. Some people do this to save money, but it is your responsibility to understand the rules and to keep documentation of your prescription.

Do I lose my Medicare coverage if I travel for three months?

No, but you should report extended travel to Medicare. If you are a U.S. citizen, you can keep Medicare Part A and Part B while you travel. However, if you are enrolled in a Medicare Advantage plan or Part D, you cannot use those benefits outside the U.S., and you may lose enrollment if you are gone for an extended period. Contact Medicare before you leave to understand how your specific situation is handled.

What if I retire and move to another country permanently?

U.S. citizens can keep Medicare Part A and Part B while living abroad, but you cannot enroll in Medicare Advantage or Part D from outside the country. You will need to arrange for Part B premiums to be paid while you are abroad, usually through automatic bank transfers. Permanent residents (green card holders) have different rules. Contact Medicare or speak with a Social Security representative before you move to understand your options and obligations.