Unusual anesthesia
Modifier 23
Indicates the surgeon provided regional or general anesthesia
Modifier 47
MAC
Monitored anesthesia care
MAC for deep, complex, or invasive procedures
Modifier G8
MAC for patients with severe cardiopulmonary conditions
Modifier G9
Anesthesiologist personally performed anesthesia
Modifier AA
Supervision of more than four concurrent anesthesia procedures
Modifier AD
Medical direction of 2-4 CRNAs
Modifier QK
CRNA service with medical direction
Modifier QX
Medical direction of one CRNA
Modifier QY
CRNA service without direction
Modifier QZ
Monitored anesthesia care (MAC)
Modifier QS
Normal healthy patient
Modifier P1
Mild systemic disease
Modifier P2
Severe systemic disease
Modifier P3
Severe systemic disease that is a constant threat to life
Modifier P4
Patient not expected to survive without surgery
Modifier P5
Brain dead patient (organ donor)
Modifier P6
Start in the index under anesthesia
Anesthesia code selection
Unlisted anesthesia code
01999
Bier block
Blocks the lower arm or leg
Epidural block
Often used in labor and delivery
Conscious sedation
Found in medicine section
No separate CPT code, always bundled into surgical procedures
Local anesthesia