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Anesthesia Modifiers
| Modifier | Definition |
|---|---|
| P1 | a normal healthy patient |
| P2 | a patient with mild systemic disease |
| P3 | a patient with severe systemic disease |
| P4 | a patient with severe systemic disease that is a constant threat to life |
| P5 | a moribund patient who is not expected to survive without the operation |
| P6 | a declared brain-dead patient whose organs are being removed for donor purposes |
| AA | anesthesia services performed personally by an anesthesist |
| AD | medical supervision by a physician; more that four concurrent anesthesia procedures |
| G8 | monitored anesthesia c are (MAC) for deep complex, complicated, or markedly invasive surgical procedure |
| G9 | monitored anesthesia care (MAC) for patient who has history of severe cardio-pulmonary condition |
| GC | this service has been performed in part by a resident under the direction of a teaching physician |
| QK | medical direction of two, three, or four concurrent anesthesia procedures involving qualified individuals |
| QS | monitored anesthesia care service |
| QX | certified registered nurse anesthetist (CRNA) service; with medical direction by a physician |
| QY | medical direction of one certified registered nurse anesthetist (CRNA) by an anesthesiologist |
| QZ | certified registered nurse anesthetist (CRNA) service; without medical direction by a physician |