Effective July 1, 2016, Anthem will implement an average rate reduction of 3.63%* for existing business on all Anthem Blue Cross Life and Health Insurance Company (CDI) grandfathered medical plans with an April 1, 2016 effective date. The new lower rates will be effective July 1, 2016 and forward; there will be no retroactive rate change. Click here for a copy of the Grandfathered Rate Sheet and sample member letter. This mailing will go out by the end of May.