CMS Releases 2022 Medicare Inpatient Prospective Payment System (IPPS) Final Rule On August 2, 2021, CMS published a final rule for the 2022 Calendar Year Inpatient Prospective Payment System (IPPS) The final rule, effective October 1, 2021, authorizes additional payments for diagnostics and therapies to treat COVID-19 during the current public health emergency, and beyond....