AMERICAN SOCIETY OF ANESTHESIOLOGISTS PHYSICAL STATUS CLASSIFICATION
CLASS I No organic, physiological, biochemical or psychiatric disturbance. The pathologic process for which operation is to be performed is localized and is not a systemic disturbance.
CLASS II Mild to moderate systemic disturbance caused either by the condition to be treated or by other pathophysiological processes.
CLASS III Severe systemic disturbance or disease from whatever cause, even though it may not be possible to define the degree of disability with finality.
CLASS IV Severe systemic disorder already life‐threatening, not always correctable by the procedure.
CLASS V Moribund patient who has little chance of survival, but is submitted to the procedure in desperation. CLASS VI Organ donor.