The American Society of Anesthesiologist classification system is used to stratify patients preoperatively by risk.
ASA
Patient's Health
Status of Under-lying Disease
Limitations on Activities
Risk of Death
I
excellent; no systemic disease; excludes persons at extremes of age
none
II
disease of one body system
well-controlled
III
disease of more than one body system or one major system
controlled
present but not incapacitated
no immediate danger
IV
poor with at least 1 severe disease
poorly controlled or end stage
incapacitated
possible
V
very poor, moribund
imminent
where:
• ASA I excludes the very young and very old.
• There is an ASA class 6 for a brain-dead patient whose organs are being harvested for transplant.
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Specialty: Anesthesiology
ICD-10: ,
