On July 15, 2015, the Centers for Medicare & Medicaid Services (CMS) published its proposed rule to update the Medicare physician fee schedule (MPFS) for CY 2016 – the first rulemaking since the Medicare Access and CHIP Reauthorization Act of 2015” (MACRA) repealed the sustainable growth rate (SGR) formula. Under the proposed rule, the 2016 MPFS conversion factor (CF) would be $36.1096, compared to the 2015 CF of $35.9335, reflecting a 0.5% update factor specified under MACRA and a budget neutrality adjustment of 0.9999.