Anesthesia codes (00100-01999)
Regional Anesthesia
General Anesthesia
Local Anesthesia
Timing
In Anesthesia we count the time when the anesthesiologist begins to prepare the patient induction of anesthesia in the operating room and ends when the anesthesiologist is no longer in personal attendance, that is, when the patient may be safely placed under postoperative supervisions.
15 minutes = 1 unit
60 minutes = 4 units
Anesthesia given by Surgeon = Modifier 47
HCPCS modifier
AA
QX
QY
QZ
QK
Physical Status modifier
P1: A normal health patient
P2: A patient with mild systemic disease
P3: A patient with severe systemic disease
P4: A patient with severe systemic disease that is constant threat of life.
P5: A moribund patient who is not expected to survive without the operation
P6: A declared brain death patient whose organs are being removed for donor purpose.
Add-on-Code
+99100: Anesthesia for patient of extreme age, younger than 1 year and older than 70 years.
Do not report this code with 00326, 00561, 00834
Codes are identify by anatomical position
Head
- Neck
- Thorax
- Intrathoracic
- Spine and Spinal code
- Upper Abdomen
- Lower Abdomen
- Perinium
- Pelvis
- Knee and popliteal Area
- Upper leg
- Lower Leg
- Shoulder and Axilla
- Upper Arm and elbow
Modifier Description Multiple
AA Anesthesia services personally performed by the anesthesiologist 100%
QY Medical direction of one CRNA by an anesthesiologist 50%
QK Medical direction of two, three or four concurrent anesthesia procedures 50%
AD Supervision, more than four procedures **
** Payment to the anesthesiologist will be based on three base units per procedure when the anesthesiologist
is involved in furnishing more than four procedures concurrently or is performing other services while directing
the concurrent procedure. An additional time unit can be recognized if the physician can document he was
present at induction.
CRNA
Modifier Description Multiple
QX Anesthesia, CRNA medically directed 50%
QZ Anesthesia, CRNA not medically directed
