Using Medicare in Mexico generally isn’t possible: Part A and Part B only pay for care delivered in the 50 states, the District of Columbia, and U.S. territories such as Puerto Rico, Guam, and the U.S. Virgin Islands.1eCFR. 42 CFR 411.9 – Services Furnished Outside the United States A few narrow exceptions exist for border-area residents, emergencies that start on U.S. soil, and certain cruise-ship situations. For everything else, you’ll pay out of pocket unless you carry supplemental coverage built for foreign care.
Why Your Coverage Stops at the Border
Medicare was built as a domestic program. To have a service covered under Part A (hospital) or Part B (medical), the provider generally has to be inside U.S. borders or territories.2Medicare. What Original Medicare Covers A Mexican hospital, clinic, or doctor’s office sits outside that zone no matter how well regarded the facility is or where the physician trained.
That means routine visits, lab work, imaging, medical equipment, and standard hospital stays in Mexico are your expense. Mexican providers do not bill Medicare, and Medicare will not process claims for ordinary care delivered abroad.
Prescriptions Bought in Mexico
Part D does not cover prescriptions filled at pharmacies outside the United States.3Medicare. Travel Outside the U.S. Many retirees buy medications in Mexico because prices are often lower, but none of that spending applies to your Part D plan, and none of it counts toward catastrophic coverage thresholds. A 90-day supply picked up at a Mexican pharmacy is entirely on you.
Telehealth From Your U.S. Doctor
A video visit with your U.S.-based doctor while you’re physically in Mexico is not covered either. Through December 31, 2027, Medicare has relaxed some geographic restrictions on where a patient can be during a telehealth visit, but the patient still has to be somewhere within the United States or its territories.4HHS Telehealth. Telehealth Policy Updates Sitting in a Mexican city when the call happens puts the visit outside coverage.
When Medicare Does Pay for Care in Mexico
Federal law carves out a short list of situations in which Medicare will cover inpatient hospital services at a foreign facility. Each is fact-specific.
If You Live Near the Border
If you live in the United States near the Mexican border and a hospital in Mexico is closer to your home, or substantially more accessible, than the nearest adequately equipped U.S. hospital, Part A will pay for covered inpatient services at that Mexican hospital.5Office of the Law Revision Counsel. 42 USC 1395f – Conditions of and Limitations on Payment for Services No emergency is required. The rule recognizes that for people in border communities, a Mexican hospital is sometimes the practical choice.
Emergencies That Start on U.S. Soil
A separate provision covers emergencies. If you are physically inside the United States when a medical emergency strikes, and a Mexican hospital is closer or more accessible than the nearest equipped U.S. hospital, Medicare may pay for emergency inpatient services at the Mexican facility.6eCFR. 42 CFR Part 424, Subpart H – Special Conditions: Services Furnished in a Foreign Country The location trigger matters. You have to be on U.S. soil when the emergency starts. If you’re already in Mexico when you get sick or injured, this exception doesn’t apply.
Cruise Ships
Care delivered aboard a ship is treated as U.S. care if the ship is docked at a U.S. port, or if the treatment is given within six hours before arriving at or six hours after departing from a U.S. port.1eCFR. 42 CFR 411.9 – Services Furnished Outside the United States Beyond that six-hour window, shipboard services fall outside Medicare’s coverage zone.7Centers for Medicare & Medicaid Services. Form 1490S – Shipboard Claim Form Letter
What Counts as “Covered” Under an Exception
Even when one of these exceptions applies, the coverage is limited. Part A pays for inpatient hospital care, which means you must be formally admitted with a doctor’s order. Part B covers physician and ambulance services provided immediately before and during that covered inpatient stay.8Medicare. Medicare Coverage Outside the United States Outpatient visits, follow-up care after discharge, and any services that don’t involve an inpatient admission are not covered, even when the underlying emergency itself qualifies.
How to Fill the Gap
Because Original Medicare offers so little protection outside the United States, supplemental coverage is what actually pays foreign medical bills for most people. Three options are worth comparing.
Medigap Foreign Travel Emergency
Several standardized Medigap plans include a foreign travel emergency benefit. Plans C, D, F, G, M, and N each pay 80 percent of billed charges for medically necessary emergency care outside the United States after a $250 annual deductible, up to a $50,000 lifetime cap.8Medicare. Medicare Coverage Outside the United States Plan F is available only to people who became eligible for Medicare before January 1, 2020.9Medicare. Compare Medigap Plan Benefits
Two limits matter. The benefit only covers emergencies that begin during the first 60 days of a trip outside the United States.8Medicare. Medicare Coverage Outside the United States Something that comes up after day 60 of a long stay in Mexico isn’t covered. And the $50,000 cap is a lifetime figure across all trips, not an annual reset.
Medicare Advantage
Medicare Advantage plans are run by private insurers and must cover at least everything Original Medicare covers. Many go further and include emergency or urgent care coverage during foreign travel. Cost sharing varies. Your plan’s Summary of Benefits and Evidence of Coverage will show whether foreign emergency care is included and what a claim will cost you. Check both before you go.
Standalone Travel Medical Insurance
A separate travel medical policy from a private insurer can cover things Medigap and Medicare Advantage generally don’t, including medical evacuation back to the United States and trip cancellation. Air ambulance transport from Mexico typically runs between $25,000 and $60,000 without insurance, which is why this coverage is often worth the cost for extended stays or trips to remote areas.
Should You Keep Paying for Part B If You Live in Mexico?
If you move to Mexico around the time you turn 65 and decide to skip Part B on the theory that you can’t use it there, you may create a permanent problem for yourself. The late enrollment penalty is 10 percent of the standard Part B premium for every full 12-month period you were eligible but didn’t sign up.10Medicare. Avoid Late Enrollment Penalties That surcharge is added to your monthly premium for as long as you carry Part B, which for most people is the rest of their life. The standard Part B premium in 2026 is $202.90 per month.11Centers for Medicare & Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles
Coming Back to the U.S.
When you move back, a Special Enrollment Period opens the month you return as a U.S. resident and lasts two months after that. Coverage begins the first of the month after you enroll. Working abroad with employer-provided group health insurance gives you an eight-month Special Enrollment Period instead, and volunteers abroad get six months. Miss those windows and you wait for the next General Enrollment Period, running January 1 through March 31, and you owe the late penalty on top.
Medigap Timing
Your six-month Medigap open enrollment period, during which insurers can’t deny you or charge more based on your health, starts the first day of the month you have Part B. Delaying Part B while you live in Mexico also delays this protected window. By the time you enroll on return, changes in your health may make Medigap harder or costlier to get.
Filing a Claim for Care You Received in Mexico
If your care fits one of the exceptions above, you’ll need to file a paper claim with Medicare yourself. Mexican providers don’t bill Medicare, so you pay the full bill at the time of service and seek reimbursement afterward.
What to Bring Home With You
- An itemized bill showing the date, location, and description of each service, the charge for each item, and the name and address of the provider.12Centers for Medicare & Medicaid Services. Form CMS-1490S – Foreign Travel Instructions
- Medical records: diagnostic reports, lab results, and a narrative from the treating physician explaining why immediate care outside the United States was necessary.
- English translations of any Spanish-language documents. Certified medical translation typically runs $20 to $43 per page, with specialized records sometimes higher.
- Proof of payment, ideally showing amounts in both pesos and dollars.
The Form and What to Say on It
Form CMS-1490S, Patient’s Request for Medical Payment, is the reimbursement form.13Centers for Medicare & Medicaid Services. CMS-1490S English PDF Document Describe the illness or injury, give the Mexican provider’s full address, and note whether the treatment was for a sudden emergency or a chronic condition that became urgent. Add a cover letter explaining why the Mexican hospital was the closest available option, or otherwise setting out the facts that put your case inside one of the exceptions.
Mail the completed form and all supporting documents to the Medicare administrative contractor for your state of residence; the correct address is in the CMS-1490S instructions. Keep copies of everything. Allow at least 60 days for processing.12Centers for Medicare & Medicaid Services. Form CMS-1490S – Foreign Travel Instructions Medicare sends you a Summary Notice showing approval or denial, and if approved, a reimbursement check follows for the covered portion.
If the Claim Is Denied
You have 120 days from the date you receive the initial determination to request a redetermination from the Medicare contractor. The notice is presumed received five calendar days after its date unless you have evidence otherwise.14Centers for Medicare & Medicaid Services. First Level of Appeal: Redetermination by a Medicare Contractor A redetermination often turns on new evidence: a more detailed physician narrative, or documentation showing the Mexican hospital was the closest equipped facility. Keeping digital copies of your original submission makes resubmitting straightforward.