We are having a rep from the pacemaker/ICD companies do our interrogation/programming on our pts since Jan 1st and we have one of our employees that brings the pt to the room, hooks them up and is present while the interrogation/promamming is taking place, my question is whether or not we need to use modifier 26 on the codes. We always have a doctor in the office when this is being done and at times the pt will have a f/u visit as well after their device is checked. The 2 different reps are from 2 separate companies and one rep is telling us to use modifier 26, and the other one tells us we don't need it. Can anyone tell me which is correct?