G9879 HCPCS - TWO MEDICARE DIABETES PREVENTION PROGRAM (MDPP) CORE MAINTENANCE SESSIONS (MS) WERE ATTENDED BY AN MDPP BENEFICIARY IN MONTHS (MO) 10-12 UNDER THE MDPP EXPANDED MODEL (EM). A CORE MAINTENANCE SESSION IS AN MDPP SERVICE THAT: (1) IS FURNISHED BY AN MDPP SUPPLIER DURING MONTHS 7 THROUGH 12 OF THE MDPP SERVICES PERIOD; (2) IS APPROXIMATELY 1 HOUR IN LENGTH; AND (3) ADHERES TO A CDC-APPROVED DPP CURRICULUM FOR MAINTENANCE SESSIONS. THE BENEFICIARY ACHIEVED AT LEAST 5% WEIGHT LOSS (WL) FROM HIS/HER BASELINE WEIGHT, AS MEASURED BY AT LEAST ONE IN-PERSON WEIGHT MEASUREMENT AT A CORE MAINTENANCE SESSION IN MONTHS 10-12