Anesthesia Modifiers

Browse anesthesia modifiers used to report anesthesia services, medical direction, supervision, monitored anesthesia care, and anesthesia billing requirements.

Anesthesia Modifiers

23

Discontinued Outpatient Procedure Prior to Anesthesia

Identifies discontinued outpatient procedures before anesthesia

47

Anesthesia by Surgeon

Identifies anesthesia administered personally by the surgeon.

Anesthesia A Modifiers

AA

Anesthesiologist-Performed Anesthesia

Anesthesia personally performed by an anesthesiologist.

Anesthesia Medical Supervision

Supervision of more than four concurrent anesthesia procedures

Q Modifiers

QS

Monitored Anesthesia Care

Identifies monitored anesthesia care services

QX

Monitored Anesthesia Care

Identifies monitored anesthesia care services

QY

Direction of One CRNA

Anesthesia billing guidance for physician-directed CRNA services

QZ

CRNA anesthesia without physician medical direction

CRNA Without Medical Direction

QK

Medical Direction of Multiple Anesthesia Procedures

Medical direction of two to four concurrent procedures.

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