2007 ICD-9-CM Procedure 37.26 Catheter based invasive electrophysiologic testing 37.26 is a specific code that can be used to specify a procedure 37.26 contains 8 index entries View the full Volume 3 37.* hierarchy 37.26 also known as: Electrophysiologic studies [EPS] Code also any concomitant procedure 37.26 excludes: that as part of intraoperative testing - omit code device interrogation only without arrhythmia induction (bedside check) (89.45-89.49) His bundle recording (37.29) noninvasive programmed electrical stimulation (NIPS) (37.20) Index entries containing 37.26: EPS (electrophysiologic stimulation) catheter based invasive electrophysiologic testing 37.26 Interrogation cardioverter-defibrillator, automatic (AICD) with catheter based invasive electrophysiologic testing 37.26 CRT-D (cardiac resynchronization defibrillator) with catheter based invasive electrophysiologic testing 37.26 CRT-P (cardiac resynchronization pacemaker) with catheter based invasive electrophysiologic testing 37.26 pacemaker with catheter based invasive electrophysiologic testing 37.26 Stimulation (electronic) -- see also Implant, electronic stimulator defibrillator catheter based invasive electrophysiologic testing 37.26 electrophysiologic, cardiac catheter based invasive electrophysiologic testing 37.26 Study electrophysiologic stimulation and recording, cardiac catheter based invasive electrophysiologic testing 37.26