ASA Classification Definition Adult Example
ASA I A normal healthy patient Healthy non-smoker
ASA II Mild systemic disease Well-controlled hypertension
ASA III Severe systemic disease Poorly controlled diabetes
ASA IV Severe systemic disease that is a constant threat to life Myocardial infarction within the last 3 months
ASA V Moribund patient, not expected to survive without the operation Intracranial bleed with mass effect