CMS is holding its second 2010 semi-annual meeting of the Advisory Panel on Ambulatory Payment Classification (APC) Groups on August 23 and 24, 2010. The purpose of the Panel is to review and advise HHS and CMS on the clinical integrity of the APC groups and their associated weights under the Medicare outpatient prospective payment system (OPPS). The agenda for the meeting includes: addressing whether procedures within an APC group are similar both clinically and in terms of resource use; evaluating APC group weights; reviewing the packaging of OPPS services and costs, including the methodology and the impact on APC groups and payment; removing procedures from the inpatient list for payment under the OPPS; using single and multiple procedure claims data for CMS determination of APC group weights; and addressing other technical issues concerning APC group structure.  Advance registration is required to attend and participate in the meeting.