The Centers for Medicare and Medicare Services (CMS) has issued a proposed rule that would require Medicare Part D plans to place new limits on opioid prescribing that would take effect in 2019. The California Medical Association (CMA) is currently reviewing the proposal and will submit comments to the CMS. To read the proposal, go to https://www.cms.gov/Medicare/Health-Plans/MedicareAdvtgSpecRateStats/Downloads/Advance2019Part2.pdf. To submit comments by the March 5 deadline, go to https://www.regulations.gov, enter the docket number “CMS-2017-0163” in the Search field, and click the Comment Now button.