If a member has received a medical service and has coinsurance, who shares the cost of the service?

When a member has coinsurance, this means that they are responsible for a certain percentage of the cost of a medical service after any deductibles have been met. Coinsurance typically indicates a shared financial responsibility between the member and the insurance provider. Therefore, the costs of the services are split between them, making the member responsible for a portion of the expenses while the insurance company covers the remainder.

This arrangement encourages members to be mindful of their healthcare utilization since they directly bear a part of the costs, incentivizing cost-effective decisions about using health services. Thus, the correct answer highlights the partnership in cost-sharing between the member and the insurance provider.