What does the AA modifier indicate in anesthesia reporting?

The AA modifier specifically indicates that anesthesia was personally performed by an anesthesiologist. This modifier is used to denote that the anesthesiologist was directly involved in delivering anesthesia care, signifying their active participation in both the procedure and its management. Properly using this modifier is critical for accurate coding and billing, ensuring that the healthcare provider receives appropriate reimbursement for their services and reflects the level of professional involvement in patient care. Understanding this modifier is essential for compliance and accurate reporting within anesthesia services.