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
  • T46.2X4A|

    Poisoning by other antidysrhythmic drugs, undetermined, initial encounter

  • T46.2X4D|

    Poisoning by other antidysrhythmic drugs, undetermined, subsequent encounter

  • T46.2X4S|

    Poisoning by other antidysrhythmic drugs, undetermined, sequela

  • T46.2X5|

    Adverse effect of other antidysrhythmic drugs

  • T46.2X5A|

    Adverse effect of other antidysrhythmic drugs, initial encounter

  • T46.2X5D|

    Adverse effect of other antidysrhythmic drugs, subsequent encounter

  • T46.2X5S|

    Adverse effect of other antidysrhythmic drugs, sequela

  • T46.2X6|

    Underdosing of other antidysrhythmic drugs

  • T46.2X6A|

    Underdosing of other antidysrhythmic drugs, initial encounter

  • T46.2X6D|

    Underdosing of other antidysrhythmic drugs, subsequent encounter

  • T46.2X6S|

    Underdosing of other antidysrhythmic drugs, sequela

  • T46.3|

    Poisoning by, adverse effect of and underdosing of coronary vasodilators

  • T46.3X|

    Poisoning by, adverse effect of and underdosing of coronary vasodilators

  • T46.3X1|

    Poisoning by coronary vasodilators, accidental (unintentional)

  • T46.3X1A|

    Poisoning by coronary vasodilators, accidental (unintentional), initial encounter

  • T46.3X1D|

    Poisoning by coronary vasodilators, accidental (unintentional), subsequent encounter

  • T46.3X1S|

    Poisoning by coronary vasodilators, accidental (unintentional), sequela

  • T46.3X2|

    Poisoning by coronary vasodilators, intentional self-harm

  • T46.3X2A|

    Poisoning by coronary vasodilators, intentional self-harm, initial encounter

  • T46.3X2D|

    Poisoning by coronary vasodilators, intentional self-harm, subsequent encounter

  • T46.3X2S|

    Poisoning by coronary vasodilators, intentional self-harm, sequela

  • T46.3X3|

    Poisoning by coronary vasodilators, assault

  • T46.3X3A|

    Poisoning by coronary vasodilators, assault, initial encounter

  • T46.3X3D|

    Poisoning by coronary vasodilators, assault, subsequent encounter

  • T46.3X3S|

    Poisoning by coronary vasodilators, assault, sequela

  • T46.3X4|

    Poisoning by coronary vasodilators, undetermined

  • T46.3X4A|

    Poisoning by coronary vasodilators, undetermined, initial encounter

  • T46.3X4D|

    Poisoning by coronary vasodilators, undetermined, subsequent encounter

  • T46.3X4S|

    Poisoning by coronary vasodilators, undetermined, sequela

  • T46.3X5|

    Adverse effect of coronary vasodilators

  • T46.3X5A|

    Adverse effect of coronary vasodilators, initial encounter

  • T46.3X5D|

    Adverse effect of coronary vasodilators, subsequent encounter

  • T46.3X5S|

    Adverse effect of coronary vasodilators, sequela

  • T46.3X6|

    Underdosing of coronary vasodilators

  • T46.3X6A|

    Underdosing of coronary vasodilators, initial encounter

  • T46.3X6D|

    Underdosing of coronary vasodilators, subsequent encounter

  • T46.3X6S|

    Underdosing of coronary vasodilators, sequela

  • T46.4|

    Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors

  • T46.4X|

    Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors

  • T46.4X1|

    Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional)

  • T46.4X1A|

    Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), initial encounter

  • T46.4X1D|

    Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), subsequent encounter

  • T46.4X1S|

    Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), sequela

  • T46.4X2|

    Poisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm

  • T46.4X2A|

    Poisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, initial encounter

  • T46.4X2D|

    Poisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, subsequent encounter

  • T46.4X2S|

    Poisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, sequela

  • T46.4X3|

    Poisoning by angiotensin-converting-enzyme inhibitors, assault

  • T46.4X3A|

    Poisoning by angiotensin-converting-enzyme inhibitors, assault, initial encounter

  • T46.4X3D|

    Poisoning by angiotensin-converting-enzyme inhibitors, assault, subsequent encounter

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