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
  • T49.6X2|

    Poisoning by otorhinolaryngological drugs and preparations, intentional self-harm

  • T49.6X2A|

    Poisoning by otorhinolaryngological drugs and preparations, intentional self-harm, initial encounter

  • T49.6X2D|

    Poisoning by otorhinolaryngological drugs and preparations, intentional self-harm, subsequent encounter

  • T49.6X2S|

    Poisoning by otorhinolaryngological drugs and preparations, intentional self-harm, sequela

  • T49.6X3|

    Poisoning by otorhinolaryngological drugs and preparations, assault

  • T49.6X3A|

    Poisoning by otorhinolaryngological drugs and preparations, assault, initial encounter

  • T49.6X3D|

    Poisoning by otorhinolaryngological drugs and preparations, assault, subsequent encounter

  • T49.6X3S|

    Poisoning by otorhinolaryngological drugs and preparations, assault, sequela

  • T49.6X4|

    Poisoning by otorhinolaryngological drugs and preparations, undetermined

  • T49.6X4A|

    Poisoning by otorhinolaryngological drugs and preparations, undetermined, initial encounter

  • T49.6X4D|

    Poisoning by otorhinolaryngological drugs and preparations, undetermined, subsequent encounter

  • T49.6X4S|

    Poisoning by otorhinolaryngological drugs and preparations, undetermined, sequela

  • T49.6X5|

    Adverse effect of otorhinolaryngological drugs and preparations

  • T49.6X5A|

    Adverse effect of otorhinolaryngological drugs and preparations, initial encounter

  • T49.6X5D|

    Adverse effect of otorhinolaryngological drugs and preparations, subsequent encounter

  • T49.6X5S|

    Adverse effect of otorhinolaryngological drugs and preparations, sequela

  • T49.6X6|

    Underdosing of otorhinolaryngological drugs and preparations

  • T49.6X6A|

    Underdosing of otorhinolaryngological drugs and preparations, initial encounter

  • T49.6X6D|

    Underdosing of otorhinolaryngological drugs and preparations, subsequent encounter

  • T49.6X6S|

    Underdosing of otorhinolaryngological drugs and preparations, sequela

  • T49.7|

    Poisoning by, adverse effect of and underdosing of dental drugs, topically applied

  • T49.7X|

    Poisoning by, adverse effect of and underdosing of dental drugs, topically applied

  • T49.7X1|

    Poisoning by dental drugs, topically applied, accidental (unintentional)

  • T49.7X1A|

    Poisoning by dental drugs, topically applied, accidental (unintentional), initial encounter

  • T49.7X1D|

    Poisoning by dental drugs, topically applied, accidental (unintentional), subsequent encounter

  • T49.7X1S|

    Poisoning by dental drugs, topically applied, accidental (unintentional), sequela

  • T49.7X2|

    Poisoning by dental drugs, topically applied, intentional self-harm

  • T49.7X2A|

    Poisoning by dental drugs, topically applied, intentional self-harm, initial encounter

  • T49.7X2D|

    Poisoning by dental drugs, topically applied, intentional self-harm, subsequent encounter

  • T49.7X2S|

    Poisoning by dental drugs, topically applied, intentional self-harm, sequela

  • T49.7X3|

    Poisoning by dental drugs, topically applied, assault

  • T49.7X3A|

    Poisoning by dental drugs, topically applied, assault, initial encounter

  • T49.7X3D|

    Poisoning by dental drugs, topically applied, assault, subsequent encounter

  • T49.7X3S|

    Poisoning by dental drugs, topically applied, assault, sequela

  • T49.7X4|

    Poisoning by dental drugs, topically applied, undetermined

  • T49.7X4A|

    Poisoning by dental drugs, topically applied, undetermined, initial encounter

  • T49.7X4D|

    Poisoning by dental drugs, topically applied, undetermined, subsequent encounter

  • T49.7X4S|

    Poisoning by dental drugs, topically applied, undetermined, sequela

  • T49.7X5|

    Adverse effect of dental drugs, topically applied

  • T49.7X5A|

    Adverse effect of dental drugs, topically applied, initial encounter

  • T49.7X5D|

    Adverse effect of dental drugs, topically applied, subsequent encounter

  • T49.7X5S|

    Adverse effect of dental drugs, topically applied, sequela

  • T49.7X6|

    Underdosing of dental drugs, topically applied

  • T49.7X6A|

    Underdosing of dental drugs, topically applied, initial encounter

  • T49.7X6D|

    Underdosing of dental drugs, topically applied, subsequent encounter

  • T49.7X6S|

    Underdosing of dental drugs, topically applied, sequela

  • T49.8|

    Poisoning by, adverse effect of and underdosing of other topical agents

  • T49.8X|

    Poisoning by, adverse effect of and underdosing of other topical agents

  • T49.8X1|

    Poisoning by other topical agents, accidental (unintentional)

  • T49.8X1A|

    Poisoning by other topical agents, accidental (unintentional), initial encounter

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