Question: New Mexico Subscriber Answer: Select the guidance code based on the physician's service. For needle placement, report 76942 (Ultrasound guidance for needle placement (e.g., biopsy, aspiration, injection, localization device), imaging supervision and interpretation For vascular access, turn to +76937 (Ultrasound guidance for vascular access requiring ultrasound evaluation of potential access sites, documentation of selected vessel patency, concurrent realtime ultrasound visualization of vascular needle entry, with permanent recording and reporting [List separately in addition to code for primary procedure]). Regarding documentation, you need to maintain permanent images on file and have a separate, written report for either code to provide if the information is requested.