Question: I'm coding for the radiologist's role in a hospital-based prostate biopsy. The radiologist performed the transrectal ultrasound to evaluate the prostate for abnormalities needing investigation. The urologist then performed the biopsy while the radiologist provided ultrasound guidance for needle placement. How should I report the radiologist's services? Arizona Subscriber Answer: For the transrectal ultrasound, you should report 76872 (Ultrasound, transrectal). Be sure to append modifier 26 (Professional component) because you're reporting only the physician's services. For the guidance, you may report 76942 (Ultrasonic guidance for needle placement [e.g., biopsy, aspiration, injection, localization device], imaging supervision and interpretation). Again, you should append modifier 26. Best bet: The urologist will report the biopsy using 55700 (Biopsy, prostate; needle or punch, single or multiple, any approach).