Mexico guarantees the right to health care in its constitution, but the reality on the ground is more complicated than that legal promise suggests. The country has been working toward universal coverage for decades through a patchwork of public institutions, and as of 2025, approximately 87% of the population has some form of public health coverage. The remaining 13%, mostly people in informal jobs, rural areas, and marginalized communities, still lack reliable access. A major reform planned for 2027 aims to unify the entire system under one national network, but for now, Mexico’s health care is best described as universal in aspiration and partial in practice.
The Constitutional Right to Health
Mexico’s 1917 constitution, one of the oldest in Latin America, states that “every person has the right to health protection.” That language is broad and powerful, but it delegates the details to subsequent laws. In practice, this has meant different programs for different groups of people, with varying quality and access depending on where you live and how you earn a living.
How the System Is Split Up
Mexico doesn’t have a single health care system. It has several running in parallel, each created to serve a different slice of the population. If you work in the private sector, you and your family are covered by IMSS, the Mexican Social Security Institute. Public-sector employees get coverage through ISSSTE. Workers at the state oil company and the armed forces have their own separate systems entirely.
Everyone else, the tens of millions of Mexicans without formal employment, historically relied on a program called Seguro Popular, launched in 2003. Seguro Popular covered nearly 300 medical interventions and over 600 essential medicines with no charges at the point of care. It was the closest Mexico had come to filling the coverage gap.
In 2019, the incoming administration dismantled Seguro Popular and replaced it with a new agency called INSABI. The transition was rocky. INSABI was introduced without a clear legal mandate, operational clarity, or a solid framework for enrolling people and managing finances. Then the COVID-19 pandemic hit, exposing deep structural problems: chronic underfunding, poor coordination between federal and state governments, and weak administrative capacity. By 2023, the uninsured rate had climbed sharply to 29.1%.
INSABI was itself replaced by IMSS-Bienestar, which is now being expanded as the main provider for the uninsured population. This ongoing consolidation is the government’s current strategy for closing the gap.
What 87% Coverage Actually Means
The 87% figure from the World Bank sounds reassuring, but it masks a significant instability problem. Frequent job changes cause around 38% of insured Mexicans to lose access to care in any given year, according to the European Observatory on Health Systems and Policies. That means millions of people cycle in and out of coverage depending on their employment status. You might be covered in January and uninsured by June if you switch from a formal job to freelance work or an informal position.
The remaining 13% without coverage are concentrated in states that haven’t yet signed integration agreements with IMSS-Bienestar. These people are served by state-level health services that vary widely in quality and funding.
Wait Times and Quality of Care
Even with coverage, getting timely care in Mexico’s public system can be a challenge. The average wait time for surgical procedures across the three main public institutions is about 14 weeks. IMSS and ISSSTE hospitals perform somewhat better (12 and 13 weeks respectively), while Ministry of Health hospitals average 15 weeks. Diagnostic procedures like imaging and lab work average 11 weeks.
These averages also hide wide variation. Two hospitals within the same institution can have dramatically different wait times depending on staffing, location, and patient volume. For people in rural areas, the practical barriers go beyond wait times to include travel distance, availability of specialists, and medicine shortages.
Out-of-Pocket Costs
Mexico spends less on health care per person than any other OECD country: roughly $1,200 per person annually, which is just 24% of the OECD average. That low overall spending means the public system is stretched thin, and many Mexicans end up paying out of pocket for medications, private consultations, or procedures they can’t access quickly through public channels.
Across the OECD, voluntary spending like private insurance and out-of-pocket payments accounts for about 22% of total health spending on average. In Mexico, the share of costs borne directly by families has historically been higher, driven by gaps in public coverage and long wait times that push people toward private alternatives.
The 2027 Unification Plan
Mexico’s government is planning a second phase of reform, set to begin around 2027, that would create a unified national network called the Public Health Service. The idea is to integrate IMSS, ISSSTE, and IMSS-Bienestar under a single operational framework, so that any Mexican citizen can walk into any public facility and receive care regardless of employment status. The plan promises free care at the point of service with uniform quality standards nationwide.
If fully implemented, this would be the most significant structural change to Mexican health care in decades. It would eliminate the fragmentation that has defined the system since its creation, where your employer determines which hospitals you can use and what quality of care you receive. Whether the government can execute this transition smoothly, given the difficulties of the INSABI rollout just a few years ago, remains an open question.
Access for Foreigners
Foreign residents in Mexico can voluntarily enroll in IMSS as independent or self-employed workers. Registration gives you and your legal beneficiaries (who must also have legal residence in Mexico) access to medical consultations, medicines, hospitalization, surgeries, emergency care, and specialty services. Enrollment also provides life and disability insurance, childcare insurance for young children, and access to preventive medicine programs. You’ll need to pay regular contributions, but the cost is substantially lower than private insurance.
This option is popular among retirees and remote workers living in Mexico, though many expats also purchase private insurance to supplement public coverage, particularly for shorter wait times and access to private hospital networks.