While the ASC industry continues to celebrate the addition of total knee arthroplasty (TKA), CPT 27447, Arthroplasty, knee, condyle and plateau; medial and lateral compartments with or without patella resurfacing (total knee arthroplasty), to the Medicare ASC-payable list beginning January 1, 2020, facilities will want to perform a financial due diligence analysis prior to adding these procedures to their case mix.