Exam CPC topic 8 question 55 discussion

A patient has a malfunctioning ventricular electrode. The operative report reflects that the cardiologist made an incision into the subclavicular pocket, which housed a single chamber pacemaker. He detached the malfunctioning ventricular electrode, removed it from the patient, and made the decision to have a thoracic surgeon implant an epicardial lead later in the day (no new hardware was implanted). He then closed the skin pocket with multiple layers of suture.
Which CPT® code is reported for the cardiologist's service?