Question: Illinois Subscriber Answer: The first code you should report for this procedure is 51102 (Aspiration of bladder; with insertion of suprapubic catheter). This code is more appropriate and specific than simply 51100 (Aspiration of bladder; by needle) because your urologist placed the catheter via suprapubic approach. Then, report the ultrasound code that you suggested: 76942 (Ultrasonic guidance for needle placement [e.g., biopsy, aspiration, injection, localization device], imaging supervision and interpretation). Tip: