I used 3M and went through this selecting EGD, dilation, balloon, over guidewire, and ended up with 43248. After checking the CPT then to confirm, I would use the 43248 as it indicates guidewire.Thanks for your responses. This a dilation of the esophagus, so I don't think 43245 would work. I looked at the lay description of 43248 and it states that a dilator is passed over the guide wire to perform dilation and increasingly larger dilators can be used, but it does not state balloon dilation. Does anyone know definitively if 43248 includes balloon dilation?