On March 31, 2016, CMS published a Manufacturer Release delaying implementation of the revised 70/30 test which manufacturers are to utilize to assess whether a 5i drug is generally dispensed at retail, as well as the 5i AMP methodology prescribed in the final AMP rule and codified at 42 CFR 447.504, until July 1, 2016.  CMS cautions manufacturers they are required to timely file monthly and quarterly AMPs and to document their reasonable assumptions supporting their calculations.