Question: Oklahoma Subscriber Answer: Your gastroenterologist might use different techniques for enteroscopy. The three different techniques used by gastroenterologists for enteroscopy include: Note that there are no separate CPT® codes for the different techniques of enteroscopy your gastroenterologist might use. Instead, while choosing the right code to report you will have to concentrate on the following guidelines: The approach used -- The most common approach is through the mouth (antegrade approach) although sometimes your gastroenterologist might view the distal portions of the ileum using a retrograde approach through the rectum. The extent to which the small intestine was visualized The purpose of the procedure (such as visualization, biopsy, removal of a lesion using a snare, control of bleeding, etc) Example: Suppose during the procedure your gastroenterologist took a biopsy specimen, then you have to report the procedure using 44361 (Small intestinal endoscopy, enteroscopy beyond second portion of duodenum, not including ileum; with biopsy, single or multiple) or 44377 (...including ileum...) depending on the extent to which the scope was advanced. Instead, if your gastroenterologist used a retrograde approach for the enteroscopy procedure, you will have to use the unlisted procedure code 44799 (Unlisted procedure, intestine) as there is no separate CPT® code to report the procedure done using a retrograde approach.