On November 21, 2008, CMS published a notice correcting technical and typographical errors identified in the September 18, 2008 interim final rule with comment period that revises the regulations governing the Medicare Advantage program, the Part D prescription drug benefit program, and section 1876 cost plans to conform with provisions of the Medicare Improvements for Patients and Providers Act (MIPPA). The correcting amendment is effective November 21, 2008, and is applicable on September 18, 2008.