CPT® Code 93640

Electrophysiologic evaluation of single or dual chamber pacing cardioverter-defibrillator leads including defibrillation threshold evaluation (induction of arrhythmia, evaluation of sensing and pacing for arrhythmia termination) at time of initial implantation or replacement;

An electrophysiologic evaluation of single or dual chamber pacing cardioverter-defibrillator leads is a critical procedure performed during the initial implantation or replacement of these devices. This evaluation includes a thorough assessment of the defibrillation threshold, which is the minimum energy level required to successfully terminate an induced arrhythmia. During the procedure, arrhythmias are intentionally induced to test the effectiveness of the leads in sensing and pacing, ensuring they can effectively terminate the arrhythmia. The evaluation confirms that the pacing cardioverter-defibrillator leads are correctly positioned and functioning as intended. This involves checking the leads to ensure they are optimally placed for sensing arrhythmias and that they can deliver the necessary energy to convert the arrhythmia back to a normal heart rhythm. It is important to note that if the pulse generator is also tested during this evaluation, the appropriate code to use is 93641.