DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 20

W20-W49 Exposure to inanimate mechanical forces (W20-W49)

Block W20-W49 groups 26 categories with 510 billable codes in FY2027.

Where it sits

  1. Chapter 20 External causes of morbidity (V00-Y99)
  2. W20-W49 Exposure to inanimate mechanical forces (W20-W49)

Neighbouring blocks

Categories
26
Billable codes
510
CC codes
0
MCC codes
0
HCC V28 codes
0
New FY2027
0

Categories in W20-W49

  • W20

    Struck by thrown, projected or falling object

    –

    • 9 billable codes
  • W21

    Striking against or struck by sports equipment

    –

    • 72 billable codes
  • W22

    Striking against or struck by other objects

    –

    • 33 billable codes
  • W23

    Caught, crushed, jammed or pinched in or between objects

    –

    • 9 billable codes
  • W24

    Contact with lifting and transmission devices, not elsewhere classified

    –

    • 6 billable codes
  • W25

    Contact with sharp glass

    –

    • 3 billable codes
  • W26

    Contact with other sharp objects

    –

    • 15 billable codes
  • W27

    Contact with nonpowered hand tool

    –

    • 21 billable codes
  • W28

    Contact with powered lawn mower

    –

    • 3 billable codes
  • W29

    Contact with other powered hand tools and household machinery

    –

    • 18 billable codes
  • W30

    Contact with agricultural machinery

    –

    • 21 billable codes
  • W31

    Contact with other and unspecified machinery

    –

    • 27 billable codes
  • W32

    Accidental handgun discharge and malfunction

    –

    • 6 billable codes
  • W33

    Accidental rifle, shotgun and larger firearm discharge and malfunction

    –

    • 30 billable codes
  • W34

    Accidental discharge and malfunction from other and unspecified firearms and guns

    –

    • 30 billable codes
  • W35

    Explosion and rupture of boiler

    –

    • 3 billable codes
  • W36

    Explosion and rupture of gas cylinder

    –

    • 15 billable codes
  • W37

    Explosion and rupture of pressurized tire, pipe or hose

    –

    • 6 billable codes
  • W38

    Explosion and rupture of other specified pressurized devices

    –

    • 3 billable codes
  • W39

    Discharge of firework

    –

    • 3 billable codes
  • W40

    Explosion of other materials

    –

    • 12 billable codes
  • W42

    Exposure to noise

    –

    • 6 billable codes
  • W44

    Foreign body entering into or through a natural orifice

    –

    • 126 billable codes
  • W45

    Foreign body or object entering through skin

    –

    • 9 billable codes
  • W46

    Contact with hypodermic needle

    –

    • 6 billable codes
  • W49

    Exposure to other inanimate mechanical forces

    –

    • 18 billable codes

Block instructions

Excludes1

  • assault (X92-Y09) X92 Y09
  • contact or collision with animals or persons (W50-W64) W50 W64
  • exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-) Y36 Y37
  • intentional self-harm (X71-X83) X71 X83

Notes that also apply

Chapter 20 instructions (Notes 1): printed on the chapter 20 page.