Medicare Improperly Paid Hospitals Millions of Dollars for Intensity-Modulated Radiation Therapy Planning Services

Payments for outpatient intensity-modulated radiation therapy (IMRT) planning services did not comply with Medicare billing requirements. Specifically, for all 100 line items in our sample, the hospitals separately billed for complex simulations when they were performed as part of IMRT planning. The overpayments primarily occurred because the hospitals appeared to be unfamiliar with or misinterpreted the Centers for Medicare & Medicaid Services (CMS) guidance. In addition, the claim processing edits did not prevent the overpayments because the edits applied only to services billed on the same date of service as the billing of the procedure code for the bundled payment, and the services in our sample were billed on a different date of service. (Medicare makes a bundled payment to hospitals to cover a range of IMRT planning services that may be performed to develop an IMRT treatment plan.) On the basis of our sample results, we estimated that Medicare overpaid hospitals nation-wide as much as $21.5 million for complex simulations billed during our audit period (for calendar years (CYs) 2013 through 2015). In addition, we identified $4.2 million in potential overpayments for other IMRT planning services that were not included in our sample. In total, Medicare overpaid hospitals as much as $25.8 million during our audit period.