Health Insurance for Americans in Mexico (2026): IMSS, Private Plans and Expat Insurance

Last updated: November 3, 2026 — figures checked on official sources on November 2, 2026.

Short answer: Medicare almost never pays for care in Mexico, so Americans living there need their own cover. The cheapest official option is IMSS's voluntary family health insurance (Seguro de Salud para la Familia), which costs 9,300 to 22,150 Mexican pesos per person per year in 2026 depending on age, but it refuses applicants with a list of serious pre-existing conditions and has waiting periods of up to two years. Most expats pair it with — or replace it by — a Mexican private plan or an international expat plan. Travel medical insurance is for visitors and nomads, not for people who have made Mexico home.

This is general information, not medical, legal or financial advice. Insurance rules and prices change; confirm everything with IMSS, Medicare or the insurer before you rely on it.

Quick comparison: your five options in Mexico

Sources for every cell are listed in the sections below. IMSS fees are charged in pesos; convert at the current rate before budgeting.

Medicare in Mexico: what it does and doesn't pay

Almost never. Medicare.gov says Medicare usually doesn't cover health care while you're traveling outside the U.S., and that in most cases you pay all costs. Mexico counts as "outside the U.S." — only the 50 states, DC, Puerto Rico, the U.S. Virgin Islands, Guam, the Northern Mariana Islands and American Samoa count as the U.S.

The exceptions are narrow and built around people who live in the US: for example, you're in the U.S. when an emergency happens and a foreign hospital is closer than the nearest U.S. hospital that can treat you, or you live in the U.S. and a foreign hospital is closer to your home. Even then, Medicare's fact sheet says it won't cover return ambulance trips home, and Medicare drug plans can't cover drugs you buy outside the U.S.

Medigap is not a fix for living in Mexico. Medicare's fact sheet says most Medigap plans (C, D, E, F, G, H, I, J, M and N) pay 80% of certain emergency care abroad after a $250 yearly deductible, with a $50,000 lifetime limit, and only if the care begins during the first 60 days of your trip. That is trip insurance, not residence insurance.

What retirees on Medicare should keep: the Part B decision

If you have premium-free Part A, the real question is Part B, which costs $202.90 a month in 2026 (standard premium) and does almost nothing for you while you live in Mexico.

The catch is the late enrollment penalty. Medicare.gov says you pay an extra 10% for each full 12-month period you could have had Part B but didn't, that the penalty is added to your monthly premium, and that it is usually charged for as long as you have Part B — for most people, a lifetime penalty. Its own example: wait two full years without a Special Enrollment Period and you pay a 20% penalty, so $243.50 a month in 2026 instead of $202.90.

Medicare frames the penalty exemptions around having other coverage similar in value to Medicare (like from an employer) or qualifying for a Special Enrollment Period. Do not assume Mexican or international insurance counts — confirm your own situation with Medicare or Social Security before dropping Part B.

• Keep Part B if there is a real chance you will move back, spend long stretches in the US, or want US treatment for something serious.
• Consider dropping it only if you are confident you will never return and you have accepted the penalty if you do.

Option 1: IMSS Seguro de Salud para la Familia (voluntary IMSS)

IMSS is Mexico's social security institute. Its Seguro de Salud para la Familia (often called "Modalidad 33") lets people without social security buy into IMSS medical care — surgical, pharmaceutical and hospital care — by paying an annual fee in advance. Mexico's Social Security Law says all families in Mexico have the right to this family health insurance, and the regulation opens it to anyone who is not already covered by a mandatory social security scheme.

Don't confuse it with "incorporación voluntaria al régimen obligatorio": that is a separate route under Article 13 of the law, which since a 2023 reform covers independent and self-employed workers (among others) and works differently. This guide covers the family health insurance most retirees and non-working residents use.

Can foreign residents enroll?

IMSS's official pages do not list nationality as a condition; they describe the insurance as open to families in Mexico without social security. In practice the gatekeepers are documents: IMSS asks for a CURP and an NSS (social security number) for every family member. Mexico's population registry (RENAPO) says foreigners with temporary or permanent residence are entitled to a CURP once the National Migration Institute issues their residence card, with no additional documents. Tourists on a visitor permit have no residence card and so no route to a CURP under that process.

2026 IMSS fees by age

IMSS published these annual fees per person, in force from March 1, 2026, for new enrollments and renewals:

Fees are in Mexican pesos, set yearly by IMSS's Technical Council, and the total is the sum for each person you enroll. IMSS says it does not refund payments in whole or in part.

Who IMSS turns away: pre-existing conditions

Per IMSS and Article 82 of the regulation, applicants are not accepted if they have pre-existing conditions such as:

• Malignant tumors
• Late complications of diabetes; chronic liver disease; chronic kidney failure
• Heart valve disease, heart failure, or after-effects of ischemic heart disease (arrhythmia, angina or heart attack)
• COPD with respiratory failure
• Chronic systemic connective-tissue diseases, addictions such as alcoholism, mental disorders such as psychosis and dementia, congenital diseases, and HIV/AIDS

The list ends with "among others", and every applicant fills in an IMSS medical questionnaire and may be asked for exams. Answer it completely and honestly: IMSS warns that giving false information to obtain coverage is treated as fraud under the Social Security Law.

Waiting periods

Article 83 of the regulation sets waiting periods, counted from enrollment, before IMSS will treat certain conditions:

• 6 months: benign breast tumors
• 10 months: childbirth
• 1 year: lithotripsy; gynecological surgery (except uterine, ovarian and perineal cancers); varicose vein surgery; sinus and nose surgery; varicocele; hemorrhoid and rectal fistula/prolapse surgery; tonsil and adenoid removal; hernia surgery (except spinal disc hernia); bunion (hallux valgus) surgery; strabismus surgery
• 2 years: orthopedic surgery

What it never covers

Article 84 lists exclusions, including cosmetic surgery; glasses, contact lenses and hearing aids; preventive check-ups requested by the insured; dental work other than extractions, fillings and cleanings; orthotics and prostheses; fertility treatment; treatment of chronic conditions requiring permanent therapeutic control; and after-effects of injuries or neurological and vascular conditions acquired before enrollment.

Other rules worth knowing

• Two-person minimum: the regulation requires the main enrollee to insure at least one family member or additional relative — unless a single person declares under oath that they have no family, in which case IMSS can enroll them alone.
• Start date: you can enroll at any time of year, and services start on the first day of the following month.
• Renewal: renew from 30 days before your year ends; IMSS describes a late-renewal window of 45 days after expiry. Miss both windows and you may have to enroll from scratch — confirm with IMSS.
• Returning workers: the pre-existing and waiting-period rules don't apply if you apply within 12 months of losing IMSS cover after at least 52 weeks insured.

Our take: IMSS is excellent value as a catastrophic backstop for healthy residents, but with no choice of doctor, these exclusions, and waiting periods, it is rarely enough on its own for older Americans or anyone with a chronic condition.

Step by step: how to enroll in IMSS as a foreign resident

1. Get your residence card. Temporary or permanent residence from the National Migration Institute (INM). The card carries your foreigner number (NUE). See our Mexico country guide for the visa route.
2. Get your CURP. RENAPO says temporary and permanent residents are entitled to a CURP once they hold the card, at no cost and with no additional documents.
3. Get your NSS. Request or look up your social security number on the IMSS site with your CURP and a valid email address (procedure IMSS-02-008). Do this for every person you will enroll.
4. Start the enrollment. Online through IMSS Digital (serviciosdigitales.imss.gob.mx) for a first-time enrollment, or in person at the IMSS Subdelegación for your address, Monday to Friday, 8:00–15:30, bringing valid official ID and proof of address (original and one copy). Procedure code: IMSS-02-014.
5. Complete the medical questionnaire for each person, and attend any exams IMSS requests.
6. Pay the annual fee in advance at the bank IMSS indicates.
7. Start using IMSS from the first day of the following month.
8. Diary the renewal for 30 days before your year ends.

IMSS-Bienestar: the free public option

IMSS-Bienestar is a separate, free public health service for people without social security. Its official FAQ says registration is for people without social security who live in one of the 23 states that have joined the system and are not enrolled in IMSS or ISSSTE; registration takes your CURP, an email address, your locality and a photo. You can also turn up at a unit in a participating state and be invited to register there.

Two caveats for Americans: the FAQ does not address nationality, and you cannot register if you already have social security — enrolling in IMSS's family insurance would put you outside IMSS-Bienestar. Coverage depends on the state you live in; check whether yours is one of the 23 before counting on it.

Option 2: A Mexican private health plan

Mexican insurers sell private major-medical policies that pay for care in private hospitals. We don't quote prices here: they are quote-based and set by each insurer according to your age, deductible, coinsurance, hospital tier and medical history. What to check before you buy:

• Maximum entry age and renewal guarantees — the deal-breakers for retirees.
• Pre-existing condition exclusions and waiting periods in the policy wording, not the brochure.
• Hospital network in your city, and whether direct billing applies.
• Cover outside Mexico — usually limited to emergencies, if any.

Option 3: An international expat plan (e.g. Cigna Global)

International private medical insurance follows you across borders. Cigna Global, for example, is priced by quote; its plan pages list a "Worldwide including USA" coverage area as an option, and an optional International Medical Evacuation module that lists medical evacuation and medical repatriation as paid in full on its Silver, Gold and Platinum tiers. It underwrites using a medical questionnaire, and its optional pre-existing condition care pays toward outpatient maintenance of certain declared conditions (for example hypertension, type 2 diabetes and high cholesterol) for members aged 40–59 (Platinum only) and 60+, up to stated limits.

This is the category to look at if you are over 50, have a condition to manage, have a family, or want the option of treatment back in the US. Compare the options in our SafetyWing vs Cigna Global comparison and the wider expat health insurance guide. Get a Cigna Global quote →

Option 4: Travel medical insurance (e.g. SafetyWing)

SafetyWing Nomad Insurance Essential is travel medical insurance for new, unexpected problems. Prices on SafetyWing's site on November 2, 2026, per 4 weeks: $62.72 (ages 10–39), $102.76 (40–49), $161.28 (50–59) and $218.96 (60–69). It has a US$250,000 overall limit and up to US$100,000 lifetime for evacuation to a better-equipped hospital, and it does not cover pre-existing conditions, maternity or cancer treatment. You can buy it up to age 69.

Is it enough for living in Mexico? Usually not. SafetyWing defines your home country for Essential as where you principally reside and receive regular mail, and says your destinations can't include your home country, beyond limited home-country cover. If you have actually moved to Mexico, ask SafetyWing in writing how that applies to you. Two more points for Americans: SafetyWing says its US add-on is not available to US citizens or residents, and its separate Complete plan — full health insurance that covers your country of residence, from $177.50 a month for ages 18–39, sign-up ages 18–64 — is the SafetyWing product built for living abroad. It is open to US citizens who live outside the US at least 6 months a year.

Check SafetyWing's current price →

Affiliate disclosure: the SafetyWing link above is an affiliate link. If you sign up through it, we may earn a commission at no extra cost to you. The Cigna Global link is not an affiliate link.

Emergency evacuation to the US

Many Americans in Mexico want to be flown home for something serious. Check this explicitly, because none of the options does it by default:

• Medicare won't pay for return ambulance trips home, per its fact sheet.
• IMSS treats you in Mexico's IMSS system. The IMSS pages we checked say nothing about medical transport to another country.
• SafetyWing Essential covers evacuation "to a better equipped hospital" (up to US$100,000 lifetime) — not necessarily to the US.
• Cigna Global sells evacuation and repatriation as an optional module; the policy terms decide where you are taken.

If repatriation to a US hospital matters to you, get the destination rules in writing, or look at a dedicated medical evacuation membership alongside your main cover.

Which combination fits your situation

• Healthy resident on a budget: IMSS family insurance as your base, plus savings for private visits.
• Retiree 65+ on Medicare: keep Part B if you might return; add an international or Mexican private plan for Mexico; add IMSS if you qualify medically.
• Over 50, or with a chronic condition: an underwritten international plan, because IMSS may refuse you or exclude your condition.
• Snowbird or nomad based in the US: travel medical insurance for the trip, and keep your US cover.

Setting up the money side too? See our guide to the best banks for American expats in Mexico (IMSS is paid in pesos), and if you are still deciding where to go, our Portugal vs Mexico comparison.

Frequently asked questions

Does Medicare cover me in Mexico?

Almost never. Medicare.gov says Medicare usually doesn't cover care outside the U.S. and that you pay all costs in most cases. The narrow exceptions apply mainly to people who live in or are in the US when a foreign hospital is closer, and Medicare drug plans can't cover drugs bought abroad. Medigap's foreign travel emergency benefit applies only to care that begins in the first 60 days of a trip, with a $50,000 lifetime limit.

Can foreigners join IMSS?

Yes, if they live in Mexico, have no other social security and meet the health rules. IMSS's family health insurance is for people in Mexico without social security and needs a CURP and an NSS for each person. RENAPO says temporary and permanent residents are entitled to a CURP once they have their residence card. Applicants with certain pre-existing conditions are not accepted.

How much does IMSS cost for expats in 2026?

From March 1, 2026, IMSS's family health insurance costs per person per year: MXN 9,300 (ages 0–19), 11,550 (20–29), 12,350 (30–39), 14,350 (40–49), 14,850 (50–59), 20,600 (60–69), 21,500 (70–79) and 22,150 (80+). You pay annually in advance, and IMSS does not refund payments.

Does IMSS cover pre-existing conditions?

No. People with listed conditions — including cancer, late complications of diabetes, chronic kidney or liver disease, heart failure and HIV — are not accepted. Waiting periods of 6 months to 2 years apply to some treatments, and treatment of chronic conditions needing permanent therapeutic control is excluded.

Is SafetyWing enough for living in Mexico?

Usually not. SafetyWing Essential is travel medical insurance for new, unexpected problems. It excludes pre-existing conditions, and it limits cover in your "home country", which SafetyWing defines as where you principally reside. If Mexico is your home, look at SafetyWing Complete, IMSS, a Mexican private plan or an international plan instead, and confirm the terms in writing.

Is IMSS-Bienestar free for Americans?

IMSS-Bienestar is free care for people without social security in the 23 states that have joined it, and registration needs a CURP. Its FAQ does not address nationality, and you can't register if you already have IMSS cover. Check with your local registration module.

Should I drop Medicare Part B if I move to Mexico?

Think hard first. Medicare.gov says the Part B late enrollment penalty is an extra 10% for each full 12-month period you could have had Part B but didn't, usually for as long as you have Part B. Keep it if there is any real chance you will move back to the US.