With the use of the CPT codebook, assign the appropriate pro…

With the use of the CPT codebook, assign the appropriate procedure code(s) to the following scenario. Use modifier(s) if applicable.A patient was taken to the endoscopy suite. The flexible endoscope was passed from the mouth into the esophagus and continued into the stomach and into the duodenal bulb. Based on this documentation, what CPT code(s) should be selected to represent this procedure?