A patient presents to the ambulatory surgical unit for a colonoscopy due to her history of colon cancer. The patient has performed the full prep for this procedure. The procedure is started. Once the splenic flexure is reached, a large obstruction of the area prevents the scope from passing any farther. The colonoscopy is discontinued after viewing only the sigmoid portion of the colon. Report

code _____.
a. 45330
b. 45330-52
c. 45378
d. 45378-52

d