Key insurance terms that start with "O"

Your out-of-pocket maximum is the most you’ll ever pay for covered health care in a single benefit year. Once you hit that number, your insurance pays 100% of covered costs for the rest of the year — no more deductibles, copays, or coinsurance.

Three costs count toward your out-of-pocket maximum:

• Your deductible
• Copays
• Coinsurance

Your monthly premium does NOT count toward it. Neither do out-of-network charges (on most plans) or costs for non-covered services.

For 2026, the federal out-of-pocket maximum limits are:

• Individual coverage: $9,200
• Family coverage: $18,400

Plans can set lower limits than the federal cap — and if you qualify for Cost-Sharing Reductions (CSR), your actual out-of-pocket maximum could be significantly lower than the federal ceiling.

Out-of-pocket costs are the expenses you pay directly for health care services — separate from your monthly premium. They include your deductible, copays, and coinsurance. Your out-of-pocket maximum caps how much these costs can total in a benefit year.

Understanding how each component works together:

• Deductible: What you pay first, before your insurance starts sharing costs
• Copay: A fixed dollar amount per visit or service
• Coinsurance: Your percentage share of a bill after the deductible is met

Your monthly premium is not an out-of-pocket cost in this context — it doesn’t count toward your out-of-pocket maximum. Neither do costs for non-covered services or out-of-network charges on most plan types.

When comparing plans, total out-of-pocket exposure matters as much as the monthly premium. A low-premium Bronze plan can result in significantly higher annual out-of-pocket costs if you use a lot of care compared to a higher-premium Gold plan with lower cost-sharing.

Out-of-network refers to doctors, hospitals, and other providers that do NOT have a contract with your health insurance plan. Because there’s no pre-negotiated rate, you’ll pay significantly more for their services — and on some plan types, your insurance may not cover out-of-network care at all.

How out-of-network care is handled depends on your plan type:

• PPO: Out-of-network care is covered, but at a higher cost share. You may also have a separate, higher out-of-network deductible.
• HMO / EPO: Out-of-network care is generally not covered except in emergencies.
• POS: Out-of-network care is covered with a referral from your PCP, but at a higher cost.

Going out-of-network can also expose you to balance billing — where the provider charges you the difference between their full rate and what your insurer pays. The No Surprises Act limits balance billing in many emergency situations, but gaps still exist for non-emergency out-of-network care.

The Open Enrollment Period (OEP) is the annual window when anyone can enroll in, change, or cancel an ACA Marketplace health insurance plan — no qualifying event required. For 2026 coverage, the federal OEP runs from November 1 – January 15, 2026. Some state-based Marketplaces have different dates.

This is your primary opportunity each year to:

• Enroll in a plan for the first time
• Switch to a different plan or carrier
• Add or remove dependents
• Update your income and household information to adjust your subsidy

Plans selected during OEP typically take effect January 1 of the following year if you enroll by December 15. Enrollments completed between December 16 and January 15 usually start February 1.

Outside of OEP, you can only enroll or make changes if you have a Qualifying Life Event that triggers a Special Enrollment Period. Missing OEP without a qualifying event means waiting a full year for another opportunity.