G9891 HCPCS - MDPP SESSION REPORTED AS A LINE-ITEM ON A CLAIM FOR A PAYABLE MDPP EXPANDED MODEL (EM) HCPCS CODE FOR A SESSION FURNISHED BY THE BILLING SUPPLIER UNDER THE MDPP EXPANDED MODEL AND COUNTING TOWARD ACHIEVEMENT OF THE ATTENDANCE PERFORMANCE GOAL FOR THE PAYABLE MDPP EXPANDED MODEL HCPCS CODE (THIS CODE IS FOR REPORTING PURPOSES ONLY)