The Centers for Medicare & Medicaid Services (CMS) released its 2020 hospital outpatient prospective payment system (OPPS)/ASC final payment rule in November 2019. The rule finalizes the addition of eight codes, including total knee arthroplasty (TKA), to the ASC-payable list. CMS also reconfirmed its decision to continue to align the ASC update factor with the factor used to update hospital outpatient department (HOPD) payments through CY 2023 as the agency assesses this policy’s impact on volume migration.