Starting January 1, 2020, under the Calendar Year (CY) 2020 Physician Fee Schedule final rule, the Centers for Medicare & Medicaid Services (CMS) will pay Opioid Treatment Programs (OTPs) through bundled payments for opioid use disorder (OUD) treatment services in an episode of care provided to people with Medicare Part B (Medical Insurance). OTPs must enroll in the Medicare program in order to receive reimbursement when these services are provided to Medicare patients.