Out-of-pocket maximum

The maximum amount you pay out of pocket in a plan year before insurance covers 100% of in-network care. Includes deductibles, copays, and coinsurance. Premiums do not count toward the OOP max. For Medicare Advantage, the in-network OOP max in 2026 is capped at $9,350 (and most plans set it lower).

What it means in practice

OOP max is the most-useful single number in evaluating health-insurance financial exposure. It's the cap on what the patient pays in a plan year for covered, in-network care. Everything that counts toward it: deductible payments, copays for covered services, coinsurance on covered services. Everything that does NOT count: premiums, out-of-network spending (in most plans), non-covered services, balance billing.

Medicare-specific: • Original Medicare (Parts A + B alone) has NO OOP max. A patient who hits Part B's 20% coinsurance on a $500,000 cancer treatment year owes $100,000 with no annual cap. This is the main reason most patients buy Medigap or enroll in Medicare Advantage. • Medigap plans (especially Plan G) effectively zero out the patient's OOP exposure for in-network Medicare-covered services. • Medicare Advantage has a federally-mandated in-network OOP max ($9,350 in 2026), with most plans setting it lower ($3,000-$6,500 typical). Out-of-network spending in MA HMOs typically doesn't count and isn't covered; in MA PPOs it counts but has a separate, higher OOP max. • Part D has its own separate OOP max ($2,000 in 2026 thanks to the IRA).

For strategic planning: if your parent is going to have a high-cost year (planned surgery, intensive cancer treatment, multiple specialists), check the OOP max early. Many families schedule elective procedures + diagnostic workups in the same year they've already hit the OOP max — because once at the cap, additional in-network care is free.

When you'll hear it

When budgeting for a year that includes major surgery, hospitalization, or chronic-disease management. Once your parent hits OOP max, in-network costs drop to zero for the rest of the year.

Is this the same as…?

Terms families frequently confuse with out-of-pocket maximum.

Related terms

• Medicare Advantage — A private-insurance alternative to original Medicare (Parts A + B), bundling the coverage with extras like prescription drugs, vision, dental, gym memberships, and sometimes meal delivery.
• Medigap — Private supplemental insurance designed to cover the deductibles and coinsurance that original Medicare (Parts A + B) doesn't.
• Medicare Part B — Covers physician services, outpatient care, durable medical equipment, and most preventive services.
• Medicare Part D — Prescription drug coverage.
• Formulary — The list of prescription drugs an insurance plan covers, usually organized into tiers (Tier 1 generic = cheapest, higher tiers = brand-name + specialty = most expensive).
• Prior authorization — A requirement from the insurance company that a doctor obtain approval before prescribing certain medications, ordering certain tests, or providing certain treatments.

See also: all glossary terms · conditions by name · step-by-step playbooks