Table 4.

American Society of Anesthesiologists Classification of Physical Status

Class*	Definition
I	A normally healthy patient
II	A patient with mild systemic disease
III	A patient with severe systemic disease that is not incapacitating
IV	A patient with an incapacitating systemic disease that is a constant threat to life
V	A moribund patient who is not expected to survive for 24 h with or without the operation

^*If the surgery is an emergency, then the physical status classification is followed by the letter E.