Coinsurance is a cost-sharing arrangement where, after the deductible is met, the insured pays a percentage of covered expenses and the insurer pays the rest. A common split is 80/20, where the insurer pays 80% and the insured pays 20% until the maximum out-of-pocket limit is reached.

Exact Extract (Virginia Health Insurance Study Guide): “Coinsurance—after the deductible has been satisfied, the insured and insurer share covered expenses in a stated ratio (e.g., 80/20).”

References (Virginia Documents / Study Guide):

— Virginia Health Insurance Examination Outline, Major Medical Policy Provisions