Question: Does CPT® include a code for a laparoscopic/robotic bladder diverticulectomy? The patient was diagnosed with diverticulum of the bladder. Iowa Subscriber Answer: No, the current CPT® book does not include a procedure code for laparoscopic bladder diverticulectomy. Instead, you should submit 51999 (Unlisted laparoscopy procedure, bladder) with supporting documentation. The associated ICD-10 diagnosis is N32.3 (Diverticulum of bladder).