Exposure to inanimate mechanical forces (W20-W49)
W20: Struck by thrown, projected or falling object

codeFirst
any associated:
cataclysm (X34-X39)
lightning strike (T75.00)

excludes1
falling object in machinery accident (W24, W28-W31)
falling object in transport accident (V01-V99)
object set in motion by explosion (W35-W40)
object set in motion by firearm (W32-W34)
struck by thrown sports equipment (W21.-)

sevenChrNote
The appropriate 7th character is to be added to each code from category W20

sevenChrDef
A: initial encounter
D: subsequent encounter
S: sequela
W20.0: Struck by falling object in cave-in
W20.1: Struck by object due to collapse of building
W20.8: Other cause of strike by thrown, projected or falling object

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