On January 5, 2016, the Centers for Medicare & Medicaid Services (CMS) sent the Medicaid Covered Outpatient Drugs Final Rule (commonly referred to as the Final AMP Rule) to  the Office of Management and Budget for review.  The Final AMP Rule was originally reviewed and released by the OMB on December 11, 2015.   The return of the Final AMP Rule from CMS to OMB technically triggers another 90-day OMB review cycle.  However, it is unclear whether OMB will require a full 90 day review or whether the changes made by CMS were technical and can be reviewed more quickly.