Which cost-sharing arrangement means you pay a percentage of costs after meeting the deductible?

• A. Coinsurance
• B. Deductible
• C. Premium
• D. Copayment

Answer: (A)

After you’ve met the deductible, the amount you pay becomes a share of the costs rather than a fixed fee. This arrangement is coinsurance: you pay a percentage of the allowed charges, and the insurer pays the rest, until you reach your out-of-pocket maximum. For example, with a 20% coinsurance on a bill, you’d pay 20% of the allowed amount and the insurer would cover 80%.

This differs from a deductible (a fixed amount you pay first before coverage starts), a copayment (a fixed amount you pay per visit or service), and a premium (the regular amount you pay to maintain coverage regardless of use). The key idea here is paying a percentage after the deductible is satisfied.