Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • Y37.100D

    Military operations involving unspecified destruction of aircraft, military personnel, subsequent encounter

  • Y37.100S

    Military operations involving unspecified destruction of aircraft, military personnel, sequela

  • Y37.101

    Military operations involving unspecified destruction of aircraft, civilian

  • Y37.101A

    Military operations involving unspecified destruction of aircraft, civilian, initial encounter

  • Y37.101D

    Military operations involving unspecified destruction of aircraft, civilian, subsequent encounter

  • Y37.101S

    Military operations involving unspecified destruction of aircraft, civilian, sequela

  • Y37.110

    Military operations involving destruction of aircraft due to enemy fire or explosives, military personnel

  • Y37.110A

    Military operations involving destruction of aircraft due to enemy fire or explosives, military personnel, initial encounter

  • Y37.110D

    Military operations involving destruction of aircraft due to enemy fire or explosives, military personnel, subsequent encounter

  • Y37.110S

    Military operations involving destruction of aircraft due to enemy fire or explosives, military personnel, sequela

  • Y37.111

    Military operations involving destruction of aircraft due to enemy fire or explosives, civilian

  • Y37.111A

    Military operations involving destruction of aircraft due to enemy fire or explosives, civilian, initial encounter

  • Y37.111D

    Military operations involving destruction of aircraft due to enemy fire or explosives, civilian, subsequent encounter

  • Y37.111S

    Military operations involving destruction of aircraft due to enemy fire or explosives, civilian, sequela

  • Y37.120

    Military operations involving destruction of aircraft due to collision with other aircraft, military personnel

  • Y37.120A

    Military operations involving destruction of aircraft due to collision with other aircraft, military personnel, initial encounter

  • Y37.120D

    Military operations involving destruction of aircraft due to collision with other aircraft, military personnel, subsequent encounter

  • Y37.120S

    Military operations involving destruction of aircraft due to collision with other aircraft, military personnel, sequela

  • Y37.121

    Military operations involving destruction of aircraft due to collision with other aircraft, civilian

  • Y37.121A

    Military operations involving destruction of aircraft due to collision with other aircraft, civilian, initial encounter

  • Y37.121D

    Military operations involving destruction of aircraft due to collision with other aircraft, civilian, subsequent encounter

  • Y37.121S

    Military operations involving destruction of aircraft due to collision with other aircraft, civilian, sequela

  • Y37.130

    Military operations involving destruction of aircraft due to onboard fire, military personnel

  • Y37.130A

    Military operations involving destruction of aircraft due to onboard fire, military personnel, initial encounter

  • Y37.130D

    Military operations involving destruction of aircraft due to onboard fire, military personnel, subsequent encounter

  • Y37.130S

    Military operations involving destruction of aircraft due to onboard fire, military personnel, sequela

  • Y37.131

    Military operations involving destruction of aircraft due to onboard fire, civilian

  • Y37.131A

    Military operations involving destruction of aircraft due to onboard fire, civilian, initial encounter

  • Y37.131D

    Military operations involving destruction of aircraft due to onboard fire, civilian, subsequent encounter

  • Y37.131S

    Military operations involving destruction of aircraft due to onboard fire, civilian, sequela

  • Y37.140

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnel

  • Y37.140A

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnel, initial encounter

  • Y37.140D

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnel, subsequent encounter

  • Y37.140S

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnel, sequela

  • Y37.141

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilian

  • Y37.141A

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilian, initial encounter

  • Y37.141D

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilian, subsequent encounter

  • Y37.141S

    Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilian, sequela

  • Y37.190

    Military operations involving other destruction of aircraft, military personnel

  • Y37.190A

    Military operations involving other destruction of aircraft, military personnel, initial encounter

  • Y37.190D

    Military operations involving other destruction of aircraft, military personnel, subsequent encounter

  • Y37.190S

    Military operations involving other destruction of aircraft, military personnel, sequela

  • Y37.191

    Military operations involving other destruction of aircraft, civilian

  • Y37.191A

    Military operations involving other destruction of aircraft, civilian, initial encounter

  • Y37.191D

    Military operations involving other destruction of aircraft, civilian, subsequent encounter

  • Y37.191S

    Military operations involving other destruction of aircraft, civilian, sequela

  • Y37.200

    Military operations involving unspecified explosion and fragments, military personnel

  • Y37.200A

    Military operations involving unspecified explosion and fragments, military personnel, initial encounter

  • Y37.200D

    Military operations involving unspecified explosion and fragments, military personnel, subsequent encounter

  • Y37.200S

    Military operations involving unspecified explosion and fragments, military personnel, sequela

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