CPT® Code 93655

Add-On Code

Intracardiac catheter ablation of a discrete mechanism of arrhythmia which is distinct from the primary ablated mechanism, including repeat diagnostic maneuvers, to treat a spontaneous or induced arrhythmia (List separately in addition to code for primary procedure)

The CPT® Code 93655 refers to the procedure of intracardiac catheter ablation specifically targeting a discrete mechanism of arrhythmia that is separate from the primary ablated mechanism. This procedure is performed in conjunction with a comprehensive electrophysiologic study (EPS), which includes various diagnostic maneuvers to evaluate the heart's electrical activity. During the procedure, multiple electrode catheters are inserted into the heart through a puncture or small incision, typically made in the groin area. These catheters are used for both recording and stimulating the heart's electrical signals, allowing for the induction or attempted induction of arrhythmias. The procedure may involve advanced techniques such as intracardiac electrophysiological 3D mapping, which helps visualize the electrical pathways and identify the arrhythmogenic focus. Once the specific site of the arrhythmia is located, an ablation catheter is utilized to deliver energy—either radiofrequency, microwave, or cryoablation—to destroy the tissue responsible for the arrhythmia. This targeted approach aims to interrupt the abnormal electrical signals and restore normal heart rhythm. Following the ablation, further testing is conducted to confirm that the arrhythmia cannot be induced, ensuring the effectiveness of the procedure. It is important to note that this code is used in addition to the primary procedure code when a distinct arrhythmia mechanism is treated.