Table 1

 The eight level Severity of Injury or Illness Index (NACA scale) for grading injuries or diseases

GradeDefinition
NACA 0No injury or disease
NACA 1Injuries/diseases without any need for acute physician care
NACA 2Injuries/diseases requiring examination and therapy by a physician but hospital admission is not indicated
NACA 3Injuries diseases without acute threat to life, but requiring hospital admission
NACA 4Injuries/diseases which can possibly lead to deterioration of vital signs
NACA 5Injuries/diseases with acute threat to life
NACA 6Injuries/diseases transported after successful resuscitation of vital signs
NACA 7Lethal injuries or diseases (with or without resuscitation attempts