Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • Y36.820D

    Explosion of bomb placed during war operations but exploding after cessation of hostilities, military personnel, subsequent encounter

  • Y36.820S

    Explosion of bomb placed during war operations but exploding after cessation of hostilities, military personnel, sequela

  • Y36.821

    Explosion of bomb placed during war operations but exploding after cessation of hostilities, civilian

  • Y36.821A

    Explosion of bomb placed during war operations but exploding after cessation of hostilities, civilian, initial encounter

  • Y36.821D

    Explosion of bomb placed during war operations but exploding after cessation of hostilities, civilian, subsequent encounter

  • Y36.821S

    Explosion of bomb placed during war operations but exploding after cessation of hostilities, civilian, sequela

  • Y36.880

    Other war operations occurring after cessation of hostilities, military personnel

  • Y36.880A

    Other war operations occurring after cessation of hostilities, military personnel, initial encounter

  • Y36.880D

    Other war operations occurring after cessation of hostilities, military personnel, subsequent encounter

  • Y36.880S

    Other war operations occurring after cessation of hostilities, military personnel, sequela

  • Y36.881

    Other war operations occurring after cessation of hostilities, civilian

  • Y36.881A

    Other war operations occurring after cessation of hostilities, civilian, initial encounter

  • Y36.881D

    Other war operations occurring after cessation of hostilities, civilian, subsequent encounter

  • Y36.881S

    Other war operations occurring after cessation of hostilities, civilian, sequela

  • Y36.890

    Unspecified war operations occurring after cessation of hostilities, military personnel

  • Y36.890A

    Unspecified war operations occurring after cessation of hostilities, military personnel, initial encounter

  • Y36.890D

    Unspecified war operations occurring after cessation of hostilities, military personnel, subsequent encounter

  • Y36.890S

    Unspecified war operations occurring after cessation of hostilities, military personnel, sequela

  • Y36.891

    Unspecified war operations occurring after cessation of hostilities, civilian

  • Y36.891A

    Unspecified war operations occurring after cessation of hostilities, civilian, initial encounter

  • Y36.891D

    Unspecified war operations occurring after cessation of hostilities, civilian, subsequent encounter

  • Y36.891S

    Unspecified war operations occurring after cessation of hostilities, civilian, sequela

  • Y36.90

    War operations, unspecified

  • Y36.90XA

    War operations, unspecified, initial encounter

  • Y36.90XD

    War operations, unspecified, subsequent encounter

  • Y36.90XS

    War operations, unspecified, sequela

  • Y36.91

    War operations involving unspecified weapon of mass destruction [WMD]

  • Y36.91XA

    War operations involving unspecified weapon of mass destruction [WMD], initial encounter

  • Y36.91XD

    War operations involving unspecified weapon of mass destruction [WMD], subsequent encounter

  • Y36.91XS

    War operations involving unspecified weapon of mass destruction [WMD], sequela

  • Y36.92

    War operations involving friendly fire

  • Y36.92XA

    War operations involving friendly fire, initial encounter

  • Y36.92XD

    War operations involving friendly fire, subsequent encounter

  • Y36.92XS

    War operations involving friendly fire, sequela

  • Y36.A1

    Low level blast overpressure in war operations

  • Y36.A1XA

    Low level blast overpressure in war operations, initial encounter

  • Y36.A1XD

    Low level blast overpressure in war operations, subsequent encounter

  • Y36.A1XS

    Low level blast overpressure in war operations, sequela

  • Y36.A2

    High level blast overpressure in war operations

  • Y36.A2XA

    High level blast overpressure in war operations, initial encounter

  • Y36.A2XD

    High level blast overpressure in war operations, subsequent encounter

  • Y36.A2XS

    High level blast overpressure in war operations, sequela

  • Y37.000

    Military operations involving explosion of unspecified marine weapon, military personnel

  • Y37.000A

    Military operations involving explosion of unspecified marine weapon, military personnel, initial encounter

  • Y37.000D

    Military operations involving explosion of unspecified marine weapon, military personnel, subsequent encounter

  • Y37.000S

    Military operations involving explosion of unspecified marine weapon, military personnel, sequela

  • Y37.001

    Military operations involving explosion of unspecified marine weapon, civilian

  • Y37.001A

    Military operations involving explosion of unspecified marine weapon, civilian, initial encounter

  • Y37.001D

    Military operations involving explosion of unspecified marine weapon, civilian, subsequent encounter

  • Y37.001S

    Military operations involving explosion of unspecified marine weapon, civilian, sequela

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