Drew Baker is referred to a health care provider by an employer for treatment of a fracture that occurred during a fall at work. The physician billed Medicare and did not indicate on the claim that the injury was work related. Medicare benefits were paid to the provider for services rendered. This resulted in Medicare contacting the provider, who is liable for the __________ because of the

provider's failure to disclose that the injury was work-related.
a. adjudication
b. mediation
c. overpayment
d. unbundling

c