The Centers for Medicare & Medicaid Services (CMS) has published a final rule that implements provisions regarding the reporting of gross covered retiree plan-related prescription drug costs and retained rebates by Retiree Drug Subsidy (RDS) sponsors. The rule, which was published January 12, 2012, also addresses the scope of CMS’s authority to waive requirements that hinder the design of, the offering of, or enrollment in RDS plans. The rule is effective March 12, 2012.