Chapter 20

V00–Y99: External Causes of Morbidity

External Causes of Morbidity diagnostic classification updated for 2026.

Internal Codes
  • Y38.2X

    Terrorism involving other explosions and fragments

  • Y38.2X1

    Terrorism involving other explosions and fragments, public safety official injured

  • Y38.2X1A

    Terrorism involving other explosions and fragments, public safety official injured, initial encounter

  • Y38.2X1D

    Terrorism involving other explosions and fragments, public safety official injured, subsequent encounter

  • Y38.2X1S

    Terrorism involving other explosions and fragments, public safety official injured, sequela

  • Y38.2X2

    Terrorism involving other explosions and fragments, civilian injured

  • Y38.2X2A

    Terrorism involving other explosions and fragments, civilian injured, initial encounter

  • Y38.2X2D

    Terrorism involving other explosions and fragments, civilian injured, subsequent encounter

  • Y38.2X2S

    Terrorism involving other explosions and fragments, civilian injured, sequela

  • Y38.2X3

    Terrorism involving other explosions and fragments, terrorist injured

  • Y38.2X3A

    Terrorism involving other explosions and fragments, terrorist injured, initial encounter

  • Y38.2X3D

    Terrorism involving other explosions and fragments, terrorist injured, subsequent encounter

  • Y38.2X3S

    Terrorism involving other explosions and fragments, terrorist injured, sequela

  • Y38.3

    Terrorism involving fires, conflagration and hot substances

  • Y38.3X

    Terrorism involving fires, conflagration and hot substances

  • Y38.3X1

    Terrorism involving fires, conflagration and hot substances, public safety official injured

  • Y38.3X1A

    Terrorism involving fires, conflagration and hot substances, public safety official injured, initial encounter

  • Y38.3X1D

    Terrorism involving fires, conflagration and hot substances, public safety official injured, subsequent encounter

  • Y38.3X1S

    Terrorism involving fires, conflagration and hot substances, public safety official injured, sequela

  • Y38.3X2

    Terrorism involving fires, conflagration and hot substances, civilian injured

  • Y38.3X2A

    Terrorism involving fires, conflagration and hot substances, civilian injured, initial encounter

  • Y38.3X2D

    Terrorism involving fires, conflagration and hot substances, civilian injured, subsequent encounter

  • Y38.3X2S

    Terrorism involving fires, conflagration and hot substances, civilian injured, sequela

  • Y38.3X3

    Terrorism involving fires, conflagration and hot substances, terrorist injured

  • Y38.3X3A

    Terrorism involving fires, conflagration and hot substances, terrorist injured, initial encounter

  • Y38.3X3D

    Terrorism involving fires, conflagration and hot substances, terrorist injured, subsequent encounter

  • Y38.3X3S

    Terrorism involving fires, conflagration and hot substances, terrorist injured, sequela

  • Y38.4

    Terrorism involving firearms

  • Y38.4X

    Terrorism involving firearms

  • Y38.4X1

    Terrorism involving firearms, public safety official injured

  • Y38.4X1A

    Terrorism involving firearms, public safety official injured, initial encounter

  • Y38.4X1D

    Terrorism involving firearms, public safety official injured, subsequent encounter

  • Y38.4X1S

    Terrorism involving firearms, public safety official injured, sequela

  • Y38.4X2

    Terrorism involving firearms, civilian injured

  • Y38.4X2A

    Terrorism involving firearms, civilian injured, initial encounter

  • Y38.4X2D

    Terrorism involving firearms, civilian injured, subsequent encounter

  • Y38.4X2S

    Terrorism involving firearms, civilian injured, sequela

  • Y38.4X3

    Terrorism involving firearms, terrorist injured

  • Y38.4X3A

    Terrorism involving firearms, terrorist injured, initial encounter

  • Y38.4X3D

    Terrorism involving firearms, terrorist injured, subsequent encounter

  • Y38.4X3S

    Terrorism involving firearms, terrorist injured, sequela

  • Y38.5

    Terrorism involving nuclear weapons

  • Y38.5X

    Terrorism involving nuclear weapons

  • Y38.5X1

    Terrorism involving nuclear weapons, public safety official injured

  • Y38.5X1A

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

  • Y38.5X1D

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

  • Y38.5X1S

    Terrorism involving nuclear weapons, public safety official injured, sequela

  • Y38.5X2

    Terrorism involving nuclear weapons, civilian injured

  • Y38.5X2A

    Terrorism involving nuclear weapons, civilian injured, initial encounter

  • Y38.5X2D

    Terrorism involving nuclear weapons, civilian injured, subsequent encounter

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