- Hailstones, injured by, X39.8
- Hanged herself or himself, see Hanging, self-inflicted
- Hanging (accidental), see categoryT71
- Heat (effects of) (excessive), X30
- Hemorrhage,
- High,
- Hit, hitting by (accidental), see Struck by
- Hitting against, see Striking against
- Homicide (attempt) (justifiable), see Assault
- Hot,
- House fire (uncontrolled), see Exposure, fire, uncontrolled, building
- Humidity, causing problem, X39.8
- Hunger, X58
- Hurricane (any injury), X37.0
- Hypobarism, hypobaropathy, see Air, pressure, low