Kansas Subscriber
Answer: You don't mention whether the anesthesiologists use general or monitored anesthesia care (MAC), which can affect your coding. Verify which they administered, and code accordingly.
If they use general anesthesia, report the service with 00635 (Anesthesia for procedures in lumbar region; diagnostic or therapeutic lumbar puncture). If they use MAC, submit 00635, and append modifier QS (Monitored anesthesia care service).