What modifier is used when a CRNA provides anesthesia care without medical direction?

The correct choice for indicating that a Certified Registered Nurse Anesthetist (CRNA) provides anesthesia care without medical direction is the QZ modifier. This modifier is specifically designed to denote situations where the CRNA is practicing independently, indicating that they are solely responsible for the administration of anesthesia without oversight from a physician.

Understanding the role of modifiers in anesthesia billing is crucial for accurately reflecting the services provided. In cases where a CRNA works independently, the QZ modifier accurately signals to payers that the anesthesia services were not rendered under a medical direction model, which would typically involve supervision by a physician, represented by other modifiers such as QK (used for CRNA services under medical direction) or QX (which indicates CRNA services provided under medical supervision but involves a physician's involvement). The QZ modifier helps ensure appropriate reimbursement for the independent services rendered by the CRNA.