Private Health Insurance in Mexico: How GMM Policies Work
Most private cover in Mexico is sold as major medical insurance. The terms that decide what you pay, the exclusions to read twice and the free CONDUSEF tools for comparing insurers.
Private health insurance in Mexico is mostly sold as major medical insurance (seguro de gastos médicos mayores, or GMM): the insurer pays hospital and doctor bills for an illness or accident up to a sum insured, after you pay a deductible and a share called coinsurance. The financial consumer agency CONDUSEF handles complaints and publishes free tools for checking insurers.
How does a gastos médicos mayores policy work?
A GMM policy covers the cost of treating an accident or illness once the bill passes your deductible, then splits the remainder with you through coinsurance until the sum insured runs out. CONDUSEF’s guide to major medical insurance defines the terms that decide how much you pay:
| Term | Spanish | What it means |
|---|---|---|
| Sum insured | suma asegurada | The most the insurer pays for each illness or accident |
| Deductible | deducible | The amount you pay first on each claim; bills below it are not paid |
| Coinsurance | coaseguro | A percentage of the bill above the deductible that you also pay |
| Waiting period | periodo de espera | Time after you buy the policy during which some conditions are not covered |
| Pre-existing condition | preexistencia | An illness that began before the policy started; normally excluded |
| Exclusions | exclusiones | Treatments the policy never covers |
Policies are usually renewed every year. Premiums depend on age, sex, health, the sum insured, the size of the deductible and coinsurance, and the hospital level you choose. A cheaper policy usually means a higher deductible, a higher coinsurance or a narrower hospital network.
What do policies usually exclude?
CONDUSEF lists the most common exclusions as cosmetic surgery, psychiatric studies, congenital conditions, homeopathy, and accidents or illnesses linked to drug use. Each insurer writes its own list, so read the general conditions (condiciones generales) of the exact product before signing.
Pre-existing conditions are the exclusion that most often surprises new residents. If a condition began before the policy, the insurer can refuse to pay for it. Some insurers sell optional cover for certain pre-existing conditions, usually with limits. Waiting periods apply to specific treatments named in the policy, such as maternity or some elective surgeries; the length varies by insurer.
Answer the health questionnaire fully and truthfully. Leaving out a known condition can give the insurer grounds to reject a claim later.
How do you pay a hospital with GMM insurance?
Insurers settle bills in two ways, and the policy states which applies where:
- Direct payment (pago directo): at a hospital in the insurer’s network, the insurer pays the hospital and you cover only your deductible and coinsurance. For planned surgery you usually need authorization in advance; for emergencies, call the insurer’s 24-hour line on the way.
- Reimbursement (reembolso): you pay first, then file the invoices, medical reports and claim forms. Keep every original document and the electronic invoices (facturas).
Some insurers waive the deductible and coinsurance for accidents, according to CONDUSEF; check your contract rather than assume. Our page on emergency numbers in Mexico City covers what to have ready when you call for help.
How do you compare insurers and policies?
- Confirm the insurer is authorized. CONDUSEF’s Registry of Financial Service Providers (SIPRES) lists every authorized company.
- Check its complaint record in CONDUSEF’s Bureau of Financial Entities (Buró de Entidades Financieras), which shows complaints and how the company resolved them.
- Run the same profile through CONDUSEF’s major medical insurance simulator to compare premiums, then compare the non-price terms the simulator does not settle: waiting periods, pre-existing condition rules and the hospital list.
- Ask for the general conditions and the hospital network before paying, and check that the hospitals near your home are included.
- Ask how the premium changes with age and whether the policy can be renewed without new medical questions.
Is private insurance better than IMSS?
They do different jobs, and many residents use both. Mexico’s Social Security Institute (IMSS) offers foreign residents voluntary enrollment with an annual fee, its own exclusions for pre-existing conditions and access to IMSS clinics and hospitals; our guide to IMSS voluntary enrollment explains who qualifies. Private GMM gives you private hospitals and doctors, at a higher price that rises with age.
Travel insurance from your home country is a third option, but most travel policies are built for short trips and may not cover living in Mexico long term. Read the fine print for residency limits.
Can you deduct premiums from Mexican taxes?
Yes, if you are a Mexican tax resident and file an annual return. Article 151 of the Income Tax Law (Ley del Impuesto sobre la Renta) allows a personal deduction for major medical insurance premiums paid for yourself, a spouse or partner, and parents or children. The deduction counts toward the overall cap on personal deductions. Our guide to Mexico’s annual tax return explains the cap and how to claim it.
This page explains how the insurance market works and is not financial or medical advice. The insurer’s contract governs your cover, and a licensed insurance agent or CONDUSEF can answer questions about a specific policy.
Bottom line
Before buying, get the general conditions and hospital list for two or three products, check each insurer in SIPRES and the Buró de Entidades Financieras, and disclose your medical history fully. Save the insurer’s 24-hour number in your phone the day the policy starts.
FAQ
Can foreigners buy private health insurance in Mexico?
Yes. Mexican insurers sell GMM policies to foreign residents, usually with a Mexican address and proof of identity and immigration status. Each insurer sets its own conditions, including maximum age for new customers.
Where do I complain if my insurer refuses a claim?
First file a complaint with the insurer’s specialized customer unit (UNE). If that fails, CONDUSEF accepts complaints against insurers and can call both sides to a conciliation hearing.
Does GMM cover doctor visits and medicines?
Mainly when they relate to a covered illness or accident and the total passes the deductible. Routine check-ups and minor visits are often below the deductible, so many people pay those out of pocket.
What is a waiting period for maternity?
It is the time after you buy the policy before pregnancy and birth costs are covered. The length differs between insurers and products, so compare it in the general conditions before you buy if you plan a pregnancy.