- Factors, supplemental,
- Failure,
- Fall, falling (accidental), W19
- Fallen on by,
- Felo-de-se, see Suicide
- Fight (hand) (fists) (foot), see Assault, fight
- Fire (accidental), see Exposure, fire
- Firearm discharge, see Discharge, firearm
- Fireball effects from nuclear explosion in war operations, see War operations, nuclear weapons
- Fireworks (explosion), W39
- Flash burns from explosion, see Explosion
- Flood (any injury) (caused by), X38
- Food in (any type),
- Forces of nature, X39.8
- Foreign body,
- Forest fire (exposure to), see Exposure, fire, uncontrolled, not in building
- Found injured, X58
- Fracture (circumstances unknown or unspecified), X58
- Freezing, see Exposure, cold
- Frostbite, X31
- Frozen, see Exposure, cold