An insured does not have to pay coinsurance or deductibles on a full series of mouth x-rays but does have to pay a deductible to get his cavities filled. Which dental plan does he have?

The dental plan that allows an insured to avoid paying coinsurance or deductibles for a full series of mouth x-rays but still requires a deductible for fillings is a nonscheduled plan. This type of plan typically covers preventive services, such as x-rays, at 100% without any out-of-pocket costs to the insured, while it may impose cost-sharing requirements for other procedures, such as restorative work for cavities. This structure is designed to encourage routine dental care by removing financial barriers for preventive services.

Other types of plans, like scheduled or procedure-based plans, often have more rigid structures that specify payments for various services and may not allow for the same level of flexibility in covering preventive services without costs. A limited dental plan usually pertains to specific types of treatments or services rather than a comprehensive approach to preventive care. Hence, the nonscheduled plan is characterized by its coverage policies that align with the scenario provided.