CPT® Code 93656

Comprehensive electrophysiologic evaluation with transseptal catheterizations, insertion and repositioning of multiple electrode catheters, induction or attempted induction of an arrhythmia including left or right atrial pacing/recording, and intracardiac catheter ablation of atrial fibrillation by pulmonary vein isolation, including intracardiac electrophysiologic 3-dimensional mapping, intracardiac echocardiography with imaging supervision and interpretation, right ventricular pacing/recording, and His bundle recording, when performed

A comprehensive electrophysiologic evaluation (EPS) is a specialized procedure designed to assess the electrical activity of the heart and identify any arrhythmias, particularly atrial fibrillation. This evaluation involves a series of intricate steps, including transseptal catheterizations, which allow access to the left atrium of the heart. During the procedure, multiple electrode catheters are inserted and repositioned to gather detailed information about the heart's electrical signals. The EPS not only aims to induce or attempt to induce an arrhythmia through left or right atrial pacing and recording but also includes right ventricular pacing and recording, as well as His bundle recording when necessary. The procedure begins with the insertion of catheters through the skin, typically via blood vessels in the groin, and these catheters are navigated into the heart chambers. Once in place, the recording electrode catheters monitor the heart's electrical activity, while the stimulating electrode catheters are used to pace the heart and induce arrhythmias. This comprehensive evaluation is crucial for understanding the mechanisms that trigger or sustain atrial fibrillation. Additionally, the procedure incorporates intracardiac echocardiography, which provides real-time imaging of the heart structures, and 3-dimensional mapping, which creates a detailed representation of the electrical activity within the heart. This mapping is essential for identifying the precise locations of abnormal electrical pathways. Following the evaluation, intracardiac catheter ablation is performed to isolate the pulmonary veins, a common source of atrial fibrillation. The ablation process involves applying energy to the targeted tissue to disrupt the abnormal electrical signals, thereby aiming to restore normal heart rhythm. Overall, this comprehensive electrophysiologic evaluation is a critical component in the management and treatment of atrial fibrillation.