Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • W34.011S

    Accidental discharge of paintball gun, sequela

  • W34.018

    Accidental discharge of other gas, air or spring-operated gun

  • W34.018A

    Accidental discharge of other gas, air or spring-operated gun, initial encounter

  • W34.018D

    Accidental discharge of other gas, air or spring-operated gun, subsequent encounter

  • W34.018S

    Accidental discharge of other gas, air or spring-operated gun, sequela

  • W34.09

    Accidental discharge from other specified firearms

  • W34.09XA

    Accidental discharge from other specified firearms, initial encounter

  • W34.09XD

    Accidental discharge from other specified firearms, subsequent encounter

  • W34.09XS

    Accidental discharge from other specified firearms, sequela

  • W34.1

    Accidental malfunction from other and unspecified firearms and guns

  • W34.10

    Accidental malfunction from unspecified firearms or gun

  • W34.10XA

    Accidental malfunction from unspecified firearms or gun, initial encounter

  • W34.10XD

    Accidental malfunction from unspecified firearms or gun, subsequent encounter

  • W34.10XS

    Accidental malfunction from unspecified firearms or gun, sequela

  • W34.11

    Accidental malfunction of gas, air or spring-operated guns

  • W34.110

    Accidental malfunction of airgun

  • W34.110A

    Accidental malfunction of airgun, initial encounter

  • W34.110D

    Accidental malfunction of airgun, subsequent encounter

  • W34.110S

    Accidental malfunction of airgun, sequela

  • W34.111

    Accidental malfunction of paintball gun

  • W34.111A

    Accidental malfunction of paintball gun, initial encounter

  • W34.111D

    Accidental malfunction of paintball gun, subsequent encounter

  • W34.111S

    Accidental malfunction of paintball gun, sequela

  • W34.118

    Accidental malfunction of other gas, air or spring-operated gun

  • W34.118A

    Accidental malfunction of other gas, air or spring-operated gun, initial encounter

  • W34.118D

    Accidental malfunction of other gas, air or spring-operated gun, subsequent encounter

  • W34.118S

    Accidental malfunction of other gas, air or spring-operated gun, sequela

  • W34.19

    Accidental malfunction from other specified firearms

  • W34.19XA

    Accidental malfunction from other specified firearms, initial encounter

  • W34.19XD

    Accidental malfunction from other specified firearms, subsequent encounter

  • W34.19XS

    Accidental malfunction from other specified firearms, sequela

  • W35

    Explosion and rupture of boiler

  • W35.XXXA

    Explosion and rupture of boiler, initial encounter

  • W35.XXXD

    Explosion and rupture of boiler, subsequent encounter

  • W35.XXXS

    Explosion and rupture of boiler, sequela

  • W36

    Explosion and rupture of gas cylinder

  • W36.1

    Explosion and rupture of aerosol can

  • W36.1XXA

    Explosion and rupture of aerosol can, initial encounter

  • W36.1XXD

    Explosion and rupture of aerosol can, subsequent encounter

  • W36.1XXS

    Explosion and rupture of aerosol can, sequela

  • W36.2

    Explosion and rupture of air tank

  • W36.2XXA

    Explosion and rupture of air tank, initial encounter

  • W36.2XXD

    Explosion and rupture of air tank, subsequent encounter

  • W36.2XXS

    Explosion and rupture of air tank, sequela

  • W36.3

    Explosion and rupture of pressurized-gas tank

  • W36.3XXA

    Explosion and rupture of pressurized-gas tank, initial encounter

  • W36.3XXD

    Explosion and rupture of pressurized-gas tank, subsequent encounter

  • W36.3XXS

    Explosion and rupture of pressurized-gas tank, sequela

  • W36.8

    Explosion and rupture of other gas cylinder

  • W36.8XXA

    Explosion and rupture of other gas cylinder, initial encounter

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