On November 2, 2018 CMS announced the finalization of the 2019 OPPS and ASC payment rules which were initially proposed in July of 2018.[1] [2] While the final document will not be officially published until November 21st, an Inspection Copy is available for the public to review on the Federal Register website. These new payment rules in many ways expand the range of services that CMS will reimburse when performed at Ambulatory Surgical Centers (ASCs), most notably, by including certain cardiac catheterization procedures on the approved list, and by lowering the threshold that determines allowable device intensive procedures.