ILL-DEFINED AND UNKNOWN CAUSES OF MORBIDITY AND MORTALITY (797-799)

• 797 Senility without mention of psychosis
  • Old age
  • Senescence
  • Senile asthenia
  • Senile:
    • debility
    • exhaustion
  • Excludes: senile psychoses (290.0-290.9)
• 798 Sudden death, cause unknown
  • 798.0 Sudden infant death syndrome
    • Cot death
    • Crib death
    • Sudden death of nonspecific cause in infancy
  • 798.1 Instantaneous death
  • 798.2 Death occurring in less than 24 hours from onset of symptoms, not otherwise explained
    • Death known not to be violent or instantaneous, for which no cause could be discovered
    • Died without sign of disease
  • 798.9 Unattended death
    • Death in circumstances where the body of the deceased was found and no cause could be discovered
    • Found dead
• 799 Other ill-defined and unknown causes of morbidity and mortality
  • 799.0 Asphyxia
    • Excludes: asphyxia (due to):
      • carbon monoxide (986)
      • inhalation of food or foreign body (932-934.9)
      • newborn (768.0-768.9)
      • traumatic (994.7)
  • 799.1 Respiratory arrest
    • Cardiorespiratory failure
    • Excludes: cardiac arrest (427.5)
      • failure of peripheral circulation (785.50)
      • respiratory distress:
        • NOS (786.09)
        • acute (518.82)
        • following trauma or surgery (518.5)
        • newborn (770.8)
        • syndrome (newborn) (769)
          • adult (following trauma or surgery) (518.5)
          • other (518.82)
        • respiratory failure (518.81)
          • newborn (770.8)
        • respiratory insufficiency (786.09)
          • acute (518.82)
  • 799.2 Nervousness
    • "Nerves"
  • 799.3 Debility, unspecified
    • Excludes: asthenia (780.7)
      • nervous debility (300.5)
      • neurasthenia (300.5)
      • senile asthenia (797)
  • 799.4 Cachexia
    • Wasting disease
    • Excludes: nutritional marasmus (261)
  • 799.8 Other ill-defined conditions
  • 799.9 Other unknown and unspecified cause
    • Undiagnosed disease, not specified as to site or system involved
    • Unknown cause of morbidity or mortality