Description : Anesthesia services performed personally by an anesthesiologist.
Payment for services
that meet the definition of personally performed is based on the base units and
time in increments of 15-minute units as defined by CMS.
Documentation
Modifiers direct prompt and correct payment of the anesthesia claims
submitted. Documentation modifiers (AA,
QK, AD, QY, QX and QZ) must be billed in the first modifier field. If a
QS modifier applies, it must be in the second modifier field. Processing delays
and denials may occur for claims submitted without the modifiers in the correct
position.
One of the following
modifiers must be reported with anesthesia services in the first modifier
field to indicate who performed the anesthesia services.
AA – Anesthesia services performed personally by an anesthesiologist.
QK - Medical direction by a physician of two, three, or four
concurrent anesthesia procedures
AD - Medically supervised by a physician, more than four
concurrent anesthesia procedures.
QY - Medical direction of one CRNA/AA (Anesthesiologist
Assistant) by an anesthesiologist
QX - CRNA/AA (Anesthesiologist Assistant) service with
medical direction by a physician.
QZ - CRNA/AA (Anesthesiologist Assistant) service without
medical direction by a physician.
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