Final answer:
For flexible sigmoidoscopy (CPT codes 45330-45347), the endoscope is advanced beyond the splenic flexure. Flexible sigmoidoscopy is used to inspect the sigmoid colon and rectum with a camera on a flexible tube.
Step-by-step explanation:
When coding for a flexible sigmoidoscopy (CPT codes 45330-45347), the correct answer is that the endoscope is advanced beyond the splenic flexure for an endoscopic examination. Flexible sigmoidoscopy is a procedure that allows doctors to inspect the interior of the sigmoid colon and rectum with a small camera on a flexible tube. Unlike a colonoscopy, which examines the entire colon, a flexible sigmoidoscopy generally examines up to the splenic flexure, and if advanced beyond this point, other CPT codes would be considered.