When the only anesthesia for a procedure is regional so it is being billed with an ASA code (such as 01810), is 76942 supposed to be billed for the ultrasound guidance? I know 76942 is billed with nerve block codes (644xx) for post-op pain management, but what about with an ASA code? I’ve never run across this until recently and can’t find anything to say if it’s correct or not. It seems like the ultrasound might be included but I can’t find anything that says so.