What Are Essential Health Benefits?
When Congress passed the Affordable Care Act (ACA) in 2010, one of its central provisions was a requirement that all non-grandfathered individual and small-group health insurance plans cover a defined set of services. These are known as Essential Health Benefits (EHBs). The goal was to establish a floor of coverage so that Americans couldn't be sold bare-bones plans that left them exposed to catastrophic medical bills.
Under the law, insurers must cover at least ten broad categories of care without imposing annual or lifetime dollar limits on those benefits.
The Ten Categories of Essential Health Benefits
- Ambulatory patient services — Outpatient care, including doctor office visits and same-day surgical procedures.
- Emergency services — Treatment in an emergency room, regardless of whether the facility is in-network.
- Hospitalization — Inpatient care, surgery, and overnight stays.
- Maternity and newborn care — Prenatal visits, labor and delivery, and postnatal care.
- Mental health and substance use disorder services — Behavioral health treatment, counseling, and psychotherapy, on par with physical health coverage (mental health parity).
- Prescription drugs — At least one drug in every category recognized by the U.S. Pharmacopeia.
- Rehabilitative and habilitative services and devices — Physical therapy, occupational therapy, and devices that help people with disabilities or injuries regain or develop skills.
- Laboratory services — Diagnostic tests, bloodwork, and other lab procedures.
- Preventive and wellness services and chronic disease management — Immunizations, screenings, and counseling recommended by the U.S. Preventive Services Task Force.
- Pediatric services — Including oral and vision care for children.
How Are EHBs Defined in Practice?
While the ten categories are federally defined, each state has flexibility in setting a benchmark plan that determines the specific services within each category. States originally selected a benchmark from a list of options (such as the largest small-group plan in the state), and plans sold on state and federal marketplaces must cover at least what that benchmark covers.
This state-level variation means that the exact services covered under "rehabilitative care" or "prescription drugs," for example, can differ from one state to another.
What EHBs Mean for Consumers
For many Americans, EHBs represent meaningful protections. Before the ACA, it was common for individual market plans to exclude maternity care, mental health services, or prescription drug coverage entirely. Someone who purchased such a plan without reading the fine print could face enormous bills for services they assumed were covered.
At the same time, critics of the EHB mandate argue that requiring everyone to carry the same package of benefits — regardless of their personal health needs — drives up premiums. A healthy 28-year-old man, for example, must purchase a plan that includes maternity care and pediatric dental coverage whether or not those benefits are relevant to his situation.
EHBs and Cost-Sharing Limits
The ACA pairs the EHB mandate with annual limits on what enrollees can be required to pay out-of-pocket for covered services. For 2024, the out-of-pocket maximum for EHB-covered services is set by the federal government and adjusted each year. This cap applies to deductibles, copayments, and coinsurance combined — though plans may have separate limits for in-network and out-of-network services.
The Ongoing Debate
The scope of EHBs remains a flashpoint in healthcare reform discussions. Advocates argue the mandates protect consumers from predatory plan designs. Free-market critics contend they restrict consumer choice and inflate the cost of coverage, pricing younger and healthier individuals out of the market. Any meaningful ACA reform proposal will almost certainly revisit what belongs on the essential benefits list — and who gets to decide.