The most you have to pay for covered services in a plan year. After you spend this amount on deductibles, copayments, and coinsurance, your health plan pays 100% of the costs of covered benefits.
This does not include your monthly premiums. It also doesn't include anything you spend for services your plan doesn't cover.
Blog posts
Coinsurance, Copay, Deductible – What's the Difference?
Health Insurance Deductibles 101
Can't Afford Obamacare – Help Paying for High Deductible Health Insurance