The Office of Management and Budget (OMB) announced last week that it is currently reviewing CMS’s “economically significant” rule titled Medicare Clinical Diagnostic Laboratory Test Payment System (CMS-1621-P).  According to OMB, the proposed rule would require Medicare payment for clinical laboratory tests to be based on private payor rates beginning January 1, 2017, as required by section 216(a) of the Protecting Access to Medicare Act of 2014.