Chapter 19

S00–T88: Injury, Poisoning and Certain Other Consequences of External Causes

Injury, Poisoning and Certain Other Consequences of External Causes diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)
Internal Codes
  • T42.6X5|

    Adverse effect of other antiepileptic and sedative-hypnotic drugs

  • T42.6X5A|

    Adverse effect of other antiepileptic and sedative-hypnotic drugs, initial encounter

  • T42.6X5D|

    Adverse effect of other antiepileptic and sedative-hypnotic drugs, subsequent encounter

  • T42.6X5S|

    Adverse effect of other antiepileptic and sedative-hypnotic drugs, sequela

  • T42.6X6|

    Underdosing of other antiepileptic and sedative-hypnotic drugs

  • T42.6X6A|

    Underdosing of other antiepileptic and sedative-hypnotic drugs, initial encounter

  • T42.6X6D|

    Underdosing of other antiepileptic and sedative-hypnotic drugs, subsequent encounter

  • T42.6X6S|

    Underdosing of other antiepileptic and sedative-hypnotic drugs, sequela

  • T42.7|

    Poisoning by, adverse effect of and underdosing of unspecified antiepileptic and sedative-hypnotic drugs

  • T42.71|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional)

  • T42.71XA|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional), initial encounter

  • T42.71XD|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional), subsequent encounter

  • T42.71XS|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional), sequela

  • T42.72|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm

  • T42.72XA|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm, initial encounter

  • T42.72XD|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm, subsequent encounter

  • T42.72XS|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm, sequela

  • T42.73|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault

  • T42.73XA|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault, initial encounter

  • T42.73XD|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault, subsequent encounter

  • T42.73XS|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault, sequela

  • T42.74|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined

  • T42.74XA|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined, initial encounter

  • T42.74XD|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined, subsequent encounter

  • T42.74XS|

    Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined, sequela

  • T42.75|

    Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs

  • T42.75XA|

    Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs, initial encounter

  • T42.75XD|

    Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs, subsequent encounter

  • T42.75XS|

    Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs, sequela

  • T42.76|

    Underdosing of unspecified antiepileptic and sedative-hypnotic drugs

  • T42.76XA|

    Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, initial encounter

  • T42.76XD|

    Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, subsequent encounter

  • T42.76XS|

    Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, sequela

  • T42.8|

    Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants

  • T42.8X|

    Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants

  • T42.8X1|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional)

  • T42.8X1A|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional), initial encounter

  • T42.8X1D|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional), subsequent encounter

  • T42.8X1S|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional), sequela

  • T42.8X2|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm

  • T42.8X2A|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm, initial encounter

  • T42.8X2D|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm, subsequent encounter

  • T42.8X2S|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm, sequela

  • T42.8X3|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault

  • T42.8X3A|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault, initial encounter

  • T42.8X3D|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault, subsequent encounter

  • T42.8X3S|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault, sequela

  • T42.8X4|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined

  • T42.8X4A|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined, initial encounter

  • T42.8X4D|

    Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined, subsequent encounter

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