Effective with dates of service beginning on and after January 1, 2020, the Centers for Medicare and Medicaid Services (CMS) will require 2 new modifiers be appended to CPT codes on the claim form when those services are provided “in whole” or “in part” by a physical therapist assistant (PTA) or an occupational therapy assistant (OTA). To make matters worse, beginning with dates of service on and after January 1, 2022, services that contain one of the two modifiers appended to them on the claim form will be paid at 85% of the normal rate of the Medicare allowed amount