- Laceration NEC, see Injury
- Lack of,
- Landslide (falling on transport vehicle), X36.1
- Late effect, see Sequelae
- Legal,
- Lifting, see Overexertion
- Lightning (shock) (stroke) (struck by), see subcategory T75.0
- Loss of control NEC (transport vehicle), see Accident, transport
- Lost at sea NOS, see Drowning, due to, fall overboard
- Low,
- Lying before train, vehicle or other moving object, X81.8
- Lynching, see Assault