W23 Caught, crushed, jammed or pinched in or between objects

Excludes1: injury caused by cutting or piercing instruments (W25-W27)
injury caused by firearms malfunction (W32.1, W33.1-, W34.1-)
injury caused by lifting and transmission devices (W24.-)
injury caused by machinery (W28-W31)
injury caused by nonpowered hand tools (W27.-)
injury caused by transport vehicle being used as a means of transportation (V01-V99)
injury caused by struck by thrown, projected or falling object (W20.-)

7th character: The appropriate 7th character is to be added to each code from category W23
7th character definitions: initial encounter
subsequent encounter
sequela