Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • W31.0XXS

    Contact with mining and earth-drilling machinery, sequela

  • W31.1

    Contact with metalworking machines

  • W31.1XXA

    Contact with metalworking machines, initial encounter

  • W31.1XXD

    Contact with metalworking machines, subsequent encounter

  • W31.1XXS

    Contact with metalworking machines, sequela

  • W31.2

    Contact with powered woodworking and forming machines

  • W31.2XXA

    Contact with powered woodworking and forming machines, initial encounter

  • W31.2XXD

    Contact with powered woodworking and forming machines, subsequent encounter

  • W31.2XXS

    Contact with powered woodworking and forming machines, sequela

  • W31.3

    Contact with prime movers

  • W31.3XXA

    Contact with prime movers, initial encounter

  • W31.3XXD

    Contact with prime movers, subsequent encounter

  • W31.3XXS

    Contact with prime movers, sequela

  • W31.8

    Contact with other specified machinery

  • W31.81

    Contact with recreational machinery

  • W31.81XA

    Contact with recreational machinery, initial encounter

  • W31.81XD

    Contact with recreational machinery, subsequent encounter

  • W31.81XS

    Contact with recreational machinery, sequela

  • W31.82

    Contact with other commercial machinery

  • W31.82XA

    Contact with other commercial machinery, initial encounter

  • W31.82XD

    Contact with other commercial machinery, subsequent encounter

  • W31.82XS

    Contact with other commercial machinery, sequela

  • W31.83

    Contact with special construction vehicle in stationary use

  • W31.83XA

    Contact with special construction vehicle in stationary use, initial encounter

  • W31.83XD

    Contact with special construction vehicle in stationary use, subsequent encounter

  • W31.83XS

    Contact with special construction vehicle in stationary use, sequela

  • W31.89

    Contact with other specified machinery

  • W31.89XA

    Contact with other specified machinery, initial encounter

  • W31.89XD

    Contact with other specified machinery, subsequent encounter

  • W31.89XS

    Contact with other specified machinery, sequela

  • W31.9

    Contact with unspecified machinery

  • W31.9XXA

    Contact with unspecified machinery, initial encounter

  • W31.9XXD

    Contact with unspecified machinery, subsequent encounter

  • W31.9XXS

    Contact with unspecified machinery, sequela

  • W32

    Accidental handgun discharge and malfunction

  • W32.0

    Accidental handgun discharge

  • W32.0XXA

    Accidental handgun discharge, initial encounter

  • W32.0XXD

    Accidental handgun discharge, subsequent encounter

  • W32.0XXS

    Accidental handgun discharge, sequela

  • W32.1

    Accidental handgun malfunction

  • W32.1XXA

    Accidental handgun malfunction, initial encounter

  • W32.1XXD

    Accidental handgun malfunction, subsequent encounter

  • W32.1XXS

    Accidental handgun malfunction, sequela

  • W33

    Accidental rifle, shotgun and larger firearm discharge and malfunction

  • W33.0

    Accidental rifle, shotgun and larger firearm discharge

  • W33.00

    Accidental discharge of unspecified larger firearm

  • W33.00XA

    Accidental discharge of unspecified larger firearm, initial encounter

  • W33.00XD

    Accidental discharge of unspecified larger firearm, subsequent encounter

  • W33.00XS

    Accidental discharge of unspecified larger firearm, sequela

  • W33.01

    Accidental discharge of shotgun

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