Question: The cardiologist converted a single chamber pacemaker to a dual chamber system by adding an electrode to the right atrium. The cardiologist also replaced the generator. Which CPT® code should I report for this procedure? Ohio Subscriber Answer: You should report 33214 (Upgrade of implanted pacemaker system, conversion of single chamber system to dual chamber system (includes removal of previously placed pulse generator, testing of existing lead, insertion of new lead, insertion of new pulse generator)) for this procedure. Don’t miss: You should never report 33214 in conjunction with codes 33216 (Insertion of a single transvenous electrode, permanent pacemaker or implantable defibrillator), 33217 (Insertion of 2 transvenous electrodes, permanent pacemaker or implantable defibrillator), or 33227 (Removal of permanent pacemaker pulse generator with replacement of pacemaker pulse generator; single lead system)-33229 (Removal of permanent pacemaker pulse generator with replacement of pacemaker pulse generator; multiple lead system), according to CPT®.