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
  • T43.94XD|

    Poisoning by unspecified psychotropic drug, undetermined, subsequent encounter

  • T43.94XS|

    Poisoning by unspecified psychotropic drug, undetermined, sequela

  • T43.95|

    Adverse effect of unspecified psychotropic drug

  • T43.95XA|

    Adverse effect of unspecified psychotropic drug, initial encounter

  • T43.95XD|

    Adverse effect of unspecified psychotropic drug, subsequent encounter

  • T43.95XS|

    Adverse effect of unspecified psychotropic drug, sequela

  • T43.96|

    Underdosing of unspecified psychotropic drug

  • T43.96XA|

    Underdosing of unspecified psychotropic drug, initial encounter

  • T43.96XD|

    Underdosing of unspecified psychotropic drug, subsequent encounter

  • T43.96XS|

    Underdosing of unspecified psychotropic drug, sequela

  • T44|

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

  • T44.0|

    Poisoning by, adverse effect of and underdosing of anticholinesterase agents

  • T44.0X|

    Poisoning by, adverse effect of and underdosing of anticholinesterase agents

  • T44.0X1|

    Poisoning by anticholinesterase agents, accidental (unintentional)

  • T44.0X1A|

    Poisoning by anticholinesterase agents, accidental (unintentional), initial encounter

  • T44.0X1D|

    Poisoning by anticholinesterase agents, accidental (unintentional), subsequent encounter

  • T44.0X1S|

    Poisoning by anticholinesterase agents, accidental (unintentional), sequela

  • T44.0X2|

    Poisoning by anticholinesterase agents, intentional self-harm

  • T44.0X2A|

    Poisoning by anticholinesterase agents, intentional self-harm, initial encounter

  • T44.0X2D|

    Poisoning by anticholinesterase agents, intentional self-harm, subsequent encounter

  • T44.0X2S|

    Poisoning by anticholinesterase agents, intentional self-harm, sequela

  • T44.0X3|

    Poisoning by anticholinesterase agents, assault

  • T44.0X3A|

    Poisoning by anticholinesterase agents, assault, initial encounter

  • T44.0X3D|

    Poisoning by anticholinesterase agents, assault, subsequent encounter

  • T44.0X3S|

    Poisoning by anticholinesterase agents, assault, sequela

  • T44.0X4|

    Poisoning by anticholinesterase agents, undetermined

  • T44.0X4A|

    Poisoning by anticholinesterase agents, undetermined, initial encounter

  • T44.0X4D|

    Poisoning by anticholinesterase agents, undetermined, subsequent encounter

  • T44.0X4S|

    Poisoning by anticholinesterase agents, undetermined, sequela

  • T44.0X5|

    Adverse effect of anticholinesterase agents

  • T44.0X5A|

    Adverse effect of anticholinesterase agents, initial encounter

  • T44.0X5D|

    Adverse effect of anticholinesterase agents, subsequent encounter

  • T44.0X5S|

    Adverse effect of anticholinesterase agents, sequela

  • T44.0X6|

    Underdosing of anticholinesterase agents

  • T44.0X6A|

    Underdosing of anticholinesterase agents, initial encounter

  • T44.0X6D|

    Underdosing of anticholinesterase agents, subsequent encounter

  • T44.0X6S|

    Underdosing of anticholinesterase agents, sequela

  • T44.1|

    Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]

  • T44.1X|

    Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]

  • T44.1X1|

    Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional)

  • T44.1X1A|

    Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional), initial encounter

  • T44.1X1D|

    Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional), subsequent encounter

  • T44.1X1S|

    Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional), sequela

  • T44.1X2|

    Poisoning by other parasympathomimetics [cholinergics], intentional self-harm

  • T44.1X2A|

    Poisoning by other parasympathomimetics [cholinergics], intentional self-harm, initial encounter

  • T44.1X2D|

    Poisoning by other parasympathomimetics [cholinergics], intentional self-harm, subsequent encounter

  • T44.1X2S|

    Poisoning by other parasympathomimetics [cholinergics], intentional self-harm, sequela

  • T44.1X3|

    Poisoning by other parasympathomimetics [cholinergics], assault

  • T44.1X3A|

    Poisoning by other parasympathomimetics [cholinergics], assault, initial encounter

  • T44.1X3D|

    Poisoning by other parasympathomimetics [cholinergics], assault, subsequent encounter

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