Question: What anesthesia code should we use for a voiding cystourethrogram (78740)? Oklahoma Subscriber Answer: Code 78740 (Ureteral reflux study [radiopharmaceutical voiding cystogram]) essentially represents an X-ray of the child’s bladder and urinary tract. Your best anesthesia cross-code is 01922 (Anesthesia for non-invasive imaging or radiation therapy).