What does “co-insurance” require from the insured after meeting the deductible?

Co-insurance refers to the arrangement in which the insured is responsible for paying a specific percentage of the medical costs after they have met their deductible. For example, if a health insurance policy has an 80/20 co-insurance clause, the insurer covers 80% of the costs, while the insured is responsible for the remaining 20% after the deductible is satisfied. This mechanism helps to share the financial burden between the insurer and the insured, ensuring that the insured has a vested interest in the costs of their healthcare services. The percentage required from the insured can vary depending on the specific terms of the insurance policy.

The other choices do not accurately reflect the function of co-insurance. Full payment of medical costs and covering all costs without a payment misinterpret the shared financial responsibility that co-insurance entails. Similarly, the idea of refunding the deductible amount does not align with how co-insurance operates in healthcare policies.