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
  • T44.901S|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional), sequela

  • T44.902|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm

  • T44.902A|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, initial encounter

  • T44.902D|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, subsequent encounter

  • T44.902S|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, sequela

  • T44.903|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault

  • T44.903A|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, initial encounter

  • T44.903D|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, subsequent encounter

  • T44.903S|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, sequela

  • T44.904|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined

  • T44.904A|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, initial encounter

  • T44.904D|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, subsequent encounter

  • T44.904S|

    Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, sequela

  • T44.905|

    Adverse effect of unspecified drugs primarily affecting the autonomic nervous system

  • T44.905A|

    Adverse effect of unspecified drugs primarily affecting the autonomic nervous system, initial encounter

  • T44.905D|

    Adverse effect of unspecified drugs primarily affecting the autonomic nervous system, subsequent encounter

  • T44.905S|

    Adverse effect of unspecified drugs primarily affecting the autonomic nervous system, sequela

  • T44.906|

    Underdosing of unspecified drugs primarily affecting the autonomic nervous system

  • T44.906A|

    Underdosing of unspecified drugs primarily affecting the autonomic nervous system, initial encounter

  • T44.906D|

    Underdosing of unspecified drugs primarily affecting the autonomic nervous system, subsequent encounter

  • T44.906S|

    Underdosing of unspecified drugs primarily affecting the autonomic nervous system, sequela

  • T44.99|

    Poisoning by, adverse effect of and underdosing of other drugs primarily affecting the autonomic nervous system

  • T44.991|

    Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional)

  • T44.991A|

    Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter

  • T44.991D|

    Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter

  • T44.991S|

    Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), sequela

  • T44.992|

    Poisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm

  • T44.992A|

    Poisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, initial encounter

  • T44.992D|

    Poisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, subsequent encounter

  • T44.992S|

    Poisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, sequela

  • T44.993|

    Poisoning by other drug primarily affecting the autonomic nervous system, assault

  • T44.993A|

    Poisoning by other drug primarily affecting the autonomic nervous system, assault, initial encounter

  • T44.993D|

    Poisoning by other drug primarily affecting the autonomic nervous system, assault, subsequent encounter

  • T44.993S|

    Poisoning by other drug primarily affecting the autonomic nervous system, assault, sequela

  • T44.994|

    Poisoning by other drug primarily affecting the autonomic nervous system, undetermined

  • T44.994A|

    Poisoning by other drug primarily affecting the autonomic nervous system, undetermined, initial encounter

  • T44.994D|

    Poisoning by other drug primarily affecting the autonomic nervous system, undetermined, subsequent encounter

  • T44.994S|

    Poisoning by other drug primarily affecting the autonomic nervous system, undetermined, sequela

  • T44.995|

    Adverse effect of other drug primarily affecting the autonomic nervous system

  • T44.995A|

    Adverse effect of other drug primarily affecting the autonomic nervous system, initial encounter

  • T44.995D|

    Adverse effect of other drug primarily affecting the autonomic nervous system, subsequent encounter

  • T44.995S|

    Adverse effect of other drug primarily affecting the autonomic nervous system, sequela

  • T44.996|

    Underdosing of other drug primarily affecting the autonomic nervous system

  • T44.996A|

    Underdosing of other drug primarily affecting the autonomic nervous system, initial encounter

  • T44.996D|

    Underdosing of other drug primarily affecting the autonomic nervous system, subsequent encounter

  • T44.996S|

    Underdosing of other drug primarily affecting the autonomic nervous system, sequela

  • T45|

    Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified

  • T45.0|

    Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugs

  • T45.0X|

    Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugs

  • T45.0X1|

    Poisoning by antiallergic and antiemetic drugs, accidental (unintentional)

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