CPT® Code 33270

Insertion or replacement of permanent subcutaneous implantable defibrillator system, with subcutaneous electrode, including defibrillation threshold evaluation, induction of arrhythmia, evaluation of sensing for arrhythmia termination, and programming or reprogramming of sensing or therapeutic parameters, when performed

The procedure described by CPT® Code 33270 involves the insertion or replacement of a permanent subcutaneous implantable defibrillator system. This system is designed to monitor and treat life-threatening arrhythmias, such as ventricular tachycardia or ventricular fibrillation. The device consists of a pulse generator and a lead wire that contains sensing electrodes and a shocking coil. The electrodes are responsible for capturing the cardiac rhythm and transmitting this information to the pulse generator. Upon detecting an arrhythmia, the pulse generator activates the shocking coil to deliver an electrical shock, effectively terminating the arrhythmia and restoring normal heart rhythm. The procedure requires precise anatomical identification and surgical techniques to ensure proper placement of the device and its components, which are critical for the device's functionality and the patient's safety. The process includes evaluating the defibrillation threshold, inducing arrhythmias for testing, and programming the device to optimize its sensing and therapeutic parameters, ensuring that it responds appropriately to the patient's cardiac events.