Anesthesia Modifiers and their Definitions
QX - CRNA Service: with medical direction
QZ - CRNA Service: without medical direction
QY - medical direction of one CRNA by an anesthesiologist
QK - medical direction of 2, 3 or 4 concurrent anesthesia procedures
AA - anesthesia services performed personally by anesthesiologist
It appears the QX may be more appropriate.
Michele