Overpayment Letters: Look for Blue Envelopes

Beginning August 13, 2012, CGS will send all overpayment letters (demand letters) in light blue envelopes. Requests for repayment of Medicare funds are time-sensitive, and they hope that this change in envelope color will help you quickly and easily identify these requests. ï CGS uses the Healthcare Integrated General Ledger Accounting System (HIGLAS). HIGLAS is the standard accounting and payment system for Medicare and Medicaid, and all demand letters from CGS are issued through HIGLAS ï At this time, HIGLAS demand letters are automatically sent to the physical address on file for the specific provider based on the completed CMS-855 enrollment form