Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • Y38.5X2S

    Terrorism involving nuclear weapons, civilian injured, sequela

  • Y38.5X3

    Terrorism involving nuclear weapons, terrorist injured

  • Y38.5X3A

    Terrorism involving nuclear weapons, terrorist injured, initial encounter

  • Y38.5X3D

    Terrorism involving nuclear weapons, terrorist injured, subsequent encounter

  • Y38.5X3S

    Terrorism involving nuclear weapons, terrorist injured, sequela

  • Y38.6

    Terrorism involving biological weapons

  • Y38.6X

    Terrorism involving biological weapons

  • Y38.6X1

    Terrorism involving biological weapons, public safety official injured

  • Y38.6X1A

    Terrorism involving biological weapons, public safety official injured, initial encounter

  • Y38.6X1D

    Terrorism involving biological weapons, public safety official injured, subsequent encounter

  • Y38.6X1S

    Terrorism involving biological weapons, public safety official injured, sequela

  • Y38.6X2

    Terrorism involving biological weapons, civilian injured

  • Y38.6X2A

    Terrorism involving biological weapons, civilian injured, initial encounter

  • Y38.6X2D

    Terrorism involving biological weapons, civilian injured, subsequent encounter

  • Y38.6X2S

    Terrorism involving biological weapons, civilian injured, sequela

  • Y38.6X3

    Terrorism involving biological weapons, terrorist injured

  • Y38.6X3A

    Terrorism involving biological weapons, terrorist injured, initial encounter

  • Y38.6X3D

    Terrorism involving biological weapons, terrorist injured, subsequent encounter

  • Y38.6X3S

    Terrorism involving biological weapons, terrorist injured, sequela

  • Y38.7

    Terrorism involving chemical weapons

  • Y38.7X

    Terrorism involving chemical weapons

  • Y38.7X1

    Terrorism involving chemical weapons, public safety official injured

  • Y38.7X1A

    Terrorism involving chemical weapons, public safety official injured, initial encounter

  • Y38.7X1D

    Terrorism involving chemical weapons, public safety official injured, subsequent encounter

  • Y38.7X1S

    Terrorism involving chemical weapons, public safety official injured, sequela

  • Y38.7X2

    Terrorism involving chemical weapons, civilian injured

  • Y38.7X2A

    Terrorism involving chemical weapons, civilian injured, initial encounter

  • Y38.7X2D

    Terrorism involving chemical weapons, civilian injured, subsequent encounter

  • Y38.7X2S

    Terrorism involving chemical weapons, civilian injured, sequela

  • Y38.7X3

    Terrorism involving chemical weapons, terrorist injured

  • Y38.7X3A

    Terrorism involving chemical weapons, terrorist injured, initial encounter

  • Y38.7X3D

    Terrorism involving chemical weapons, terrorist injured, subsequent encounter

  • Y38.7X3S

    Terrorism involving chemical weapons, terrorist injured, sequela

  • Y38.8

    Terrorism involving other and unspecified means

  • Y38.80

    Terrorism involving unspecified means

  • Y38.80XA

    Terrorism involving unspecified means, initial encounter

  • Y38.80XD

    Terrorism involving unspecified means, subsequent encounter

  • Y38.80XS

    Terrorism involving unspecified means, sequela

  • Y38.81

    Terrorism involving suicide bomber

  • Y38.811

    Terrorism involving suicide bomber, public safety official injured

  • Y38.811A

    Terrorism involving suicide bomber, public safety official injured, initial encounter

  • Y38.811D

    Terrorism involving suicide bomber, public safety official injured, subsequent encounter

  • Y38.811S

    Terrorism involving suicide bomber, public safety official injured, sequela

  • Y38.812

    Terrorism involving suicide bomber, civilian injured

  • Y38.812A

    Terrorism involving suicide bomber, civilian injured, initial encounter

  • Y38.812D

    Terrorism involving suicide bomber, civilian injured, subsequent encounter

  • Y38.812S

    Terrorism involving suicide bomber, civilian injured, sequela

  • Y38.89

    Terrorism involving other means

  • Y38.891

    Terrorism involving other means, public safety official injured

  • Y38.891A

    Terrorism involving other means, public safety official injured, initial encounter

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