Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • Y36.30

    War operations involving unspecified fire, conflagration and hot substance

  • Y36.300

    War operations involving unspecified fire, conflagration and hot substance, military personnel

  • Y36.300A

    War operations involving unspecified fire, conflagration and hot substance, military personnel, initial encounter

  • Y36.300D

    War operations involving unspecified fire, conflagration and hot substance, military personnel, subsequent encounter

  • Y36.300S

    War operations involving unspecified fire, conflagration and hot substance, military personnel, sequela

  • Y36.301

    War operations involving unspecified fire, conflagration and hot substance, civilian

  • Y36.301A

    War operations involving unspecified fire, conflagration and hot substance, civilian, initial encounter

  • Y36.301D

    War operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter

  • Y36.301S

    War operations involving unspecified fire, conflagration and hot substance, civilian, sequela

  • Y36.31

    War operations involving gasoline bomb

  • Y36.310

    War operations involving gasoline bomb, military personnel

  • Y36.310A

    War operations involving gasoline bomb, military personnel, initial encounter

  • Y36.310D

    War operations involving gasoline bomb, military personnel, subsequent encounter

  • Y36.310S

    War operations involving gasoline bomb, military personnel, sequela

  • Y36.311

    War operations involving gasoline bomb, civilian

  • Y36.311A

    War operations involving gasoline bomb, civilian, initial encounter

  • Y36.311D

    War operations involving gasoline bomb, civilian, subsequent encounter

  • Y36.311S

    War operations involving gasoline bomb, civilian, sequela

  • Y36.32

    War operations involving incendiary bullet

  • Y36.320

    War operations involving incendiary bullet, military personnel

  • Y36.320A

    War operations involving incendiary bullet, military personnel, initial encounter

  • Y36.320D

    War operations involving incendiary bullet, military personnel, subsequent encounter

  • Y36.320S

    War operations involving incendiary bullet, military personnel, sequela

  • Y36.321

    War operations involving incendiary bullet, civilian

  • Y36.321A

    War operations involving incendiary bullet, civilian, initial encounter

  • Y36.321D

    War operations involving incendiary bullet, civilian, subsequent encounter

  • Y36.321S

    War operations involving incendiary bullet, civilian, sequela

  • Y36.33

    War operations involving flamethrower

  • Y36.330

    War operations involving flamethrower, military personnel

  • Y36.330A

    War operations involving flamethrower, military personnel, initial encounter

  • Y36.330D

    War operations involving flamethrower, military personnel, subsequent encounter

  • Y36.330S

    War operations involving flamethrower, military personnel, sequela

  • Y36.331

    War operations involving flamethrower, civilian

  • Y36.331A

    War operations involving flamethrower, civilian, initial encounter

  • Y36.331D

    War operations involving flamethrower, civilian, subsequent encounter

  • Y36.331S

    War operations involving flamethrower, civilian, sequela

  • Y36.39

    War operations involving other fires, conflagrations and hot substances

  • Y36.390

    War operations involving other fires, conflagrations and hot substances, military personnel

  • Y36.390A

    War operations involving other fires, conflagrations and hot substances, military personnel, initial encounter

  • Y36.390D

    War operations involving other fires, conflagrations and hot substances, military personnel, subsequent encounter

  • Y36.390S

    War operations involving other fires, conflagrations and hot substances, military personnel, sequela

  • Y36.391

    War operations involving other fires, conflagrations and hot substances, civilian

  • Y36.391A

    War operations involving other fires, conflagrations and hot substances, civilian, initial encounter

  • Y36.391D

    War operations involving other fires, conflagrations and hot substances, civilian, subsequent encounter

  • Y36.391S

    War operations involving other fires, conflagrations and hot substances, civilian, sequela

  • Y36.4

    War operations involving firearm discharge and other forms of conventional warfare

  • Y36.41

    War operations involving rubber bullets

  • Y36.410

    War operations involving rubber bullets, military personnel

  • Y36.410A

    War operations involving rubber bullets, military personnel, initial encounter

  • Y36.410D

    War operations involving rubber bullets, military personnel, subsequent encounter

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