Hi Nancy, your info (approach, procedure,etc) is limited, before I would suggest to begin looking @ 43245 (Upper gastrointestinal endoscopy including esophagus, stomach, and either the duodenum and/or jejunum as appropriate; with dilation of gastric outlet for obstruction [e.g., balloon, guidewire, bougie]) for the dilation of the pylorus. Hope you can use this as a starting point.