Final answer:
An X in the YES box of Block 20 indicates that the provider accepts assignment.
Step-by-step explanation:
An X in the YES box of Block 20 indicates that the provider accepts assignment.
Block 20 is a section on the insurance claim form where the provider indicates whether they accept assignment. Accepting assignment means that the provider agrees to accept the Medicare-approved amount as full payment for the service provided.
By accepting assignment, the provider agrees not to charge the patient more than the Medicare-approved amount and agrees to bill Medicare directly for the services rendered.