Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • Y36.A2XD

    High level blast overpressure in war operations, subsequent encounter

  • Y36.A2XS

    High level blast overpressure in war operations, sequela

  • Y37

    Military operations

  • Y37.0

    Military operations involving explosion of marine weapons

  • Y37.00

    Military operations involving explosion of unspecified marine weapon

  • 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

  • Y37.01

    Military operations involving explosion of depth-charge

  • Y37.010

    Military operations involving explosion of depth-charge, military personnel

  • Y37.010A

    Military operations involving explosion of depth-charge, military personnel, initial encounter

  • Y37.010D

    Military operations involving explosion of depth-charge, military personnel, subsequent encounter

  • Y37.010S

    Military operations involving explosion of depth-charge, military personnel, sequela

  • Y37.011

    Military operations involving explosion of depth-charge, civilian

  • Y37.011A

    Military operations involving explosion of depth-charge, civilian, initial encounter

  • Y37.011D

    Military operations involving explosion of depth-charge, civilian, subsequent encounter

  • Y37.011S

    Military operations involving explosion of depth-charge, civilian, sequela

  • Y37.02

    Military operations involving explosion of marine mine

  • Y37.020

    Military operations involving explosion of marine mine, military personnel

  • Y37.020A

    Military operations involving explosion of marine mine, military personnel, initial encounter

  • Y37.020D

    Military operations involving explosion of marine mine, military personnel, subsequent encounter

  • Y37.020S

    Military operations involving explosion of marine mine, military personnel, sequela

  • Y37.021

    Military operations involving explosion of marine mine, civilian

  • Y37.021A

    Military operations involving explosion of marine mine, civilian, initial encounter

  • Y37.021D

    Military operations involving explosion of marine mine, civilian, subsequent encounter

  • Y37.021S

    Military operations involving explosion of marine mine, civilian, sequela

  • Y37.03

    Military operations involving explosion of sea-based artillery shell

  • Y37.030

    Military operations involving explosion of sea-based artillery shell, military personnel

  • Y37.030A

    Military operations involving explosion of sea-based artillery shell, military personnel, initial encounter

  • Y37.030D

    Military operations involving explosion of sea-based artillery shell, military personnel, subsequent encounter

  • Y37.030S

    Military operations involving explosion of sea-based artillery shell, military personnel, sequela

  • Y37.031

    Military operations involving explosion of sea-based artillery shell, civilian

  • Y37.031A

    Military operations involving explosion of sea-based artillery shell, civilian, initial encounter

  • Y37.031D

    Military operations involving explosion of sea-based artillery shell, civilian, subsequent encounter

  • Y37.031S

    Military operations involving explosion of sea-based artillery shell, civilian, sequela

  • Y37.04

    Military operations involving explosion of torpedo

  • Y37.040

    Military operations involving explosion of torpedo, military personnel

  • Y37.040A

    Military operations involving explosion of torpedo, military personnel, initial encounter

  • Y37.040D

    Military operations involving explosion of torpedo, military personnel, subsequent encounter

  • Y37.040S

    Military operations involving explosion of torpedo, military personnel, sequela

  • Y37.041

    Military operations involving explosion of torpedo, civilian

  • Y37.041A

    Military operations involving explosion of torpedo, civilian, initial encounter

  • Y37.041D

    Military operations involving explosion of torpedo, civilian, subsequent encounter

  • Y37.041S

    Military operations involving explosion of torpedo, civilian, sequela

  • Y37.05

    Military operations involving accidental detonation of onboard marine weapons

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