36.4.3.13 Supervision of Concurrent Anesthesia Procedures
Physicians must supply information on the number of concurrent anesthesia procedures being concurrently supervised through the use of the appropriate modifier. The name of each qualified person supervised and all concurrent procedures performed do not have to be submitted on the claim form. Physicians are responsible for maintaining the information that is subject to retrospective review.
The percentage of reduction for each modifier is shown in the following table:
Modifier
Description
Time Divided By
RVU Reduction
AA
Anesthesia services performed personally by the anesthesiologist [RVU + (Minutes/15)] X Conversion Factor = Allowed Amount
15 minutes
0 percent
AD
Medical supervision by a physician; more than four concurrent anesthesia procedures. The AD modifier is also used when a modifier is not submitted on the claim.
NA. Total time units for claim are set to one unit.
0 percent
QK
Medical direction of two, three, or four concurrent anesthesia procedures involving qualified individuals [RVU + (Minutes/30)] X Conversion Factor = Allowed Amount
30 minutes
10 percent
QS
Monitored services. This informational modifier can be billed by a CRNA or physician and must have a pricing modifier billed with it for processing.
NA
NA
QY*
Medical direction of one CRNA by an anesthesiologist [RVU + (Minutes/15)] X Conversion Factor = Allowed Amount
15 minutes
0 percent
Texas Medicaid & Healthcare Partnership CPT only copyright 2007 American Medical Association. All rights reserved.
