Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • 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

  • W36.8XXD

    Explosion and rupture of other gas cylinder, subsequent encounter

  • W36.8XXS

    Explosion and rupture of other gas cylinder, sequela

  • W36.9

    Explosion and rupture of unspecified gas cylinder

  • W36.9XXA

    Explosion and rupture of unspecified gas cylinder, initial encounter

  • W36.9XXD

    Explosion and rupture of unspecified gas cylinder, subsequent encounter

  • W36.9XXS

    Explosion and rupture of unspecified gas cylinder, sequela

  • W37.0

    Explosion of bicycle tire

  • W37.0XXA

    Explosion of bicycle tire, initial encounter

  • W37.0XXD

    Explosion of bicycle tire, subsequent encounter

  • W37.0XXS

    Explosion of bicycle tire, sequela

  • W37.8

    Explosion and rupture of other pressurized tire, pipe or hose

  • W37.8XXA

    Explosion and rupture of other pressurized tire, pipe or hose, initial encounter

  • W37.8XXD

    Explosion and rupture of other pressurized tire, pipe or hose, subsequent encounter

  • W37.8XXS

    Explosion and rupture of other pressurized tire, pipe or hose, sequela

  • W38

    Explosion and rupture of other specified pressurized devices

  • W38.XXXA

    Explosion and rupture of other specified pressurized devices, initial encounter

  • W38.XXXD

    Explosion and rupture of other specified pressurized devices, subsequent encounter

  • W38.XXXS

    Explosion and rupture of other specified pressurized devices, sequela

  • W39

    Discharge of firework

  • W39.XXXA

    Discharge of firework, initial encounter

  • W39.XXXD

    Discharge of firework, subsequent encounter

  • W39.XXXS

    Discharge of firework, sequela

  • W40.0

    Explosion of blasting material

  • W40.0XXA

    Explosion of blasting material, initial encounter

  • W40.0XXD

    Explosion of blasting material, subsequent encounter

  • W40.0XXS

    Explosion of blasting material, sequela

  • W40.1

    Explosion of explosive gases

  • W40.1XXA

    Explosion of explosive gases, initial encounter

  • W40.1XXD

    Explosion of explosive gases, subsequent encounter

  • W40.1XXS

    Explosion of explosive gases, sequela

  • W40.8

    Explosion of other specified explosive materials

  • W40.8XXA

    Explosion of other specified explosive materials, initial encounter

  • W40.8XXD

    Explosion of other specified explosive materials, subsequent encounter

  • W40.8XXS

    Explosion of other specified explosive materials, sequela

  • W40.9

    Explosion of unspecified explosive materials

  • W40.9XXA

    Explosion of unspecified explosive materials, initial encounter

  • W40.9XXD

    Explosion of unspecified explosive materials, subsequent encounter

  • W40.9XXS

    Explosion of unspecified explosive materials, sequela

  • W42.0

    Exposure to supersonic waves

  • W42.0XXA

    Exposure to supersonic waves, initial encounter

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