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
  • T49.8X1D|

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

  • T49.8X1S|

    Poisoning by other topical agents, accidental (unintentional), sequela

  • T49.8X2|

    Poisoning by other topical agents, intentional self-harm

  • T49.8X2A|

    Poisoning by other topical agents, intentional self-harm, initial encounter

  • T49.8X2D|

    Poisoning by other topical agents, intentional self-harm, subsequent encounter

  • T49.8X2S|

    Poisoning by other topical agents, intentional self-harm, sequela

  • T49.8X3|

    Poisoning by other topical agents, assault

  • T49.8X3A|

    Poisoning by other topical agents, assault, initial encounter

  • T49.8X3D|

    Poisoning by other topical agents, assault, subsequent encounter

  • T49.8X3S|

    Poisoning by other topical agents, assault, sequela

  • T49.8X4|

    Poisoning by other topical agents, undetermined

  • T49.8X4A|

    Poisoning by other topical agents, undetermined, initial encounter

  • T49.8X4D|

    Poisoning by other topical agents, undetermined, subsequent encounter

  • T49.8X4S|

    Poisoning by other topical agents, undetermined, sequela

  • T49.8X5|

    Adverse effect of other topical agents

  • T49.8X5A|

    Adverse effect of other topical agents, initial encounter

  • T49.8X5D|

    Adverse effect of other topical agents, subsequent encounter

  • T49.8X5S|

    Adverse effect of other topical agents, sequela

  • T49.8X6|

    Underdosing of other topical agents

  • T49.8X6A|

    Underdosing of other topical agents, initial encounter

  • T49.8X6D|

    Underdosing of other topical agents, subsequent encounter

  • T49.8X6S|

    Underdosing of other topical agents, sequela

  • T49.9|

    Poisoning by, adverse effect of and underdosing of unspecified topical agent

  • T49.91|

    Poisoning by unspecified topical agent, accidental (unintentional)

  • T49.91XA|

    Poisoning by unspecified topical agent, accidental (unintentional), initial encounter

  • T49.91XD|

    Poisoning by unspecified topical agent, accidental (unintentional), subsequent encounter

  • T49.91XS|

    Poisoning by unspecified topical agent, accidental (unintentional), sequela

  • T49.92|

    Poisoning by unspecified topical agent, intentional self-harm

  • T49.92XA|

    Poisoning by unspecified topical agent, intentional self-harm, initial encounter

  • T49.92XD|

    Poisoning by unspecified topical agent, intentional self-harm, subsequent encounter

  • T49.92XS|

    Poisoning by unspecified topical agent, intentional self-harm, sequela

  • T49.93|

    Poisoning by unspecified topical agent, assault

  • T49.93XA|

    Poisoning by unspecified topical agent, assault, initial encounter

  • T49.93XD|

    Poisoning by unspecified topical agent, assault, subsequent encounter

  • T49.93XS|

    Poisoning by unspecified topical agent, assault, sequela

  • T49.94|

    Poisoning by unspecified topical agent, undetermined

  • T49.94XA|

    Poisoning by unspecified topical agent, undetermined, initial encounter

  • T49.94XD|

    Poisoning by unspecified topical agent, undetermined, subsequent encounter

  • T49.94XS|

    Poisoning by unspecified topical agent, undetermined, sequela

  • T49.95|

    Adverse effect of unspecified topical agent

  • T49.95XA|

    Adverse effect of unspecified topical agent, initial encounter

  • T49.95XD|

    Adverse effect of unspecified topical agent, subsequent encounter

  • T49.95XS|

    Adverse effect of unspecified topical agent, sequela

  • T49.96|

    Underdosing of unspecified topical agent

  • T49.96XA|

    Underdosing of unspecified topical agent, initial encounter

  • T49.96XD|

    Underdosing of unspecified topical agent, subsequent encounter

  • T49.96XS|

    Underdosing of unspecified topical agent, sequela

  • T50|

    Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances

  • T50.0|

    Poisoning by, adverse effect of and underdosing of mineralocorticoids and their antagonists

  • T50.0X|

    Poisoning by, adverse effect of and underdosing of mineralocorticoids and their antagonists

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