We address more than a dozen key proposals from the CMS outpatient prospective payment system (OPPS) and ambulatory surgical center payment systems proposed rule in a recent LawFlash. Chief among them is the agency’s bold new proposal for a broad price transparency program. Other notable proposals include continuing payment reductions for 340B drugs and grandfathered off-campus provider-based departments, both the subject of pending litigation in federal court. CMS is soliciting public input on a multitude of proposals from this rule, and comments are due September 27, 2019. Hospitals will want to carefully assess these changes and consider submitting comments before these proposals become final rules.