I need help with a coding issue. Can you tell me if the anesthesiologist/pain physician can bill for 64483, 64484, 77003, & 01992 when he performs both the injection and the anesthesia himself? Or can the anesthesia code only be billed if two separate providers are in the room? Our pain physicians are also anesthesiologist. Also, where can I locate clear quidelines on this? Thanks for your help.