by  Raquel Shumway
December 28th, 2017

Anesthesia services fall into one of the following categories ranging from lowest to greatest:

  1. Local or topical anesthesia (not covered here)
  2. Moderate (conscious) sedation (See “Moderate Sedation” on page xx)
  3. Regional anesthesia
  4. General anesthesia

Anesthesia is the administration of a drug or gas to induce partial or complete loss of consciousness. General anesthesia may only be provided by an anesthesiologist, Qualified Nonphysician Anesthetist or an Anesthesia Assistant (AA) and is billed separately from the surgical procedure.


Modifiers: The following modifiers are commonly associated with these services:

AA: Anesthesia services performed personally by anesthesiologist or when an anesthetist assists a physician in the care of a single patient.
QY: Medical direction of one Qualified Nonphysician
QK: Medical direction of two, three or four concurrent anesthesia procedures involving qualified individuals.
AD: Medical supervision by a physician: more than four concurrent anesthesia procedures.
QS: Monitored anesthesia care (MAC) service (can be submitted by a Qualified Nonphysician Anesthetist or a physician)
This modifier can be submitted by a Qualified Nonphysician Anesthetist or a physician
QX: Qualified Nonphysician Anesthetist service: with medical direction by a physician.
QZ: Qualified Nonphysician Anesthetist service: without medical direction by a physician.

For more information on Anesthesia Fee Calculation Click Here

Anesthesia. (2017, December 28). Find-A-Code Articles. Retrieved from

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