Asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated.
Minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental ADL.
Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of existing hospitalization indicated; disabling; limiting self-care ADL.
Life-threatening consequences; urgent intervention indicated.
Death related to AE.
Last Comprehensive Review: 2026