CPT® Code 33225

Add-On Code

Insertion of pacing electrode, cardiac venous system, for left ventricular pacing, at time of insertion of implantable defibrillator or pacemaker pulse generator (eg, for upgrade to dual chamber system) (List separately in addition to code for primary procedure)

The CPT® Code 33225 refers to the procedure involving the insertion of a pacing electrode into the cardiac venous system specifically for left ventricular pacing. This procedure is performed concurrently with the insertion of an implantable defibrillator or a pacemaker pulse generator. The pacing electrode is crucial for patients suffering from advanced heart failure, particularly those with a condition known as bundle branch block, which can lead to asynchronous contractions of the heart's ventricles. By placing the pacing electrode in the cardiac venous system, the physician aims to synchronize the contractions of the right and left ventricles, thereby improving overall heart function. This therapeutic approach is often categorized under cardiac resynchronization therapy (CRT) or biventricular pacing. The procedure not only involves the placement of the pacing electrode but also the attachment of this electrode to a pacemaker or implantable defibrillator, which is essential for delivering the necessary electrical impulses to the heart. The insertion of the pacing electrode is considered an additional procedure and is billed separately from the primary procedure of implanting the defibrillator or pacemaker generator.