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.)

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Use Additional Code

code to identify any retained foreign body, if applicable (Z18.-)

All Codes Billable Only

Internal Codes

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T46.0X4S|
Poisoning by cardiac-stimulant glycosides and drugs of similar action, undetermined, sequela
T46.0X5|
Adverse effect of cardiac-stimulant glycosides and drugs of similar action
T46.0X5A|
Adverse effect of cardiac-stimulant glycosides and drugs of similar action, initial encounter
T46.0X5D|
Adverse effect of cardiac-stimulant glycosides and drugs of similar action, subsequent encounter
T46.0X5S|
Adverse effect of cardiac-stimulant glycosides and drugs of similar action, sequela
T46.0X6|
Underdosing of cardiac-stimulant glycosides and drugs of similar action
T46.0X6A|
Underdosing of cardiac-stimulant glycosides and drugs of similar action, initial encounter
T46.0X6D|
Underdosing of cardiac-stimulant glycosides and drugs of similar action, subsequent encounter
T46.0X6S|
Underdosing of cardiac-stimulant glycosides and drugs of similar action, sequela
T46.1|
Poisoning by, adverse effect of and underdosing of calcium-channel blockers
T46.1X|
Poisoning by, adverse effect of and underdosing of calcium-channel blockers
T46.1X1|
Poisoning by calcium-channel blockers, accidental (unintentional)
T46.1X1A|
Poisoning by calcium-channel blockers, accidental (unintentional), initial encounter
T46.1X1D|
Poisoning by calcium-channel blockers, accidental (unintentional), subsequent encounter
T46.1X1S|
Poisoning by calcium-channel blockers, accidental (unintentional), sequela
T46.1X2|
Poisoning by calcium-channel blockers, intentional self-harm
T46.1X2A|
Poisoning by calcium-channel blockers, intentional self-harm, initial encounter
T46.1X2D|
Poisoning by calcium-channel blockers, intentional self-harm, subsequent encounter
T46.1X2S|
Poisoning by calcium-channel blockers, intentional self-harm, sequela
T46.1X3|
Poisoning by calcium-channel blockers, assault
T46.1X3A|
Poisoning by calcium-channel blockers, assault, initial encounter
T46.1X3D|
Poisoning by calcium-channel blockers, assault, subsequent encounter
T46.1X3S|
Poisoning by calcium-channel blockers, assault, sequela
T46.1X4|
Poisoning by calcium-channel blockers, undetermined
T46.1X4A|
Poisoning by calcium-channel blockers, undetermined, initial encounter
T46.1X4D|
Poisoning by calcium-channel blockers, undetermined, subsequent encounter
T46.1X4S|
Poisoning by calcium-channel blockers, undetermined, sequela
T46.1X5|
Adverse effect of calcium-channel blockers
T46.1X5A|
Adverse effect of calcium-channel blockers, initial encounter
T46.1X5D|
Adverse effect of calcium-channel blockers, subsequent encounter
T46.1X5S|
Adverse effect of calcium-channel blockers, sequela
T46.1X6|
Underdosing of calcium-channel blockers
T46.1X6A|
Underdosing of calcium-channel blockers, initial encounter
T46.1X6D|
Underdosing of calcium-channel blockers, subsequent encounter
T46.1X6S|
Underdosing of calcium-channel blockers, sequela
T46.2|
Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs, not elsewhere classified
T46.2X|
Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs
T46.2X1|
Poisoning by other antidysrhythmic drugs, accidental (unintentional)
T46.2X1A|
Poisoning by other antidysrhythmic drugs, accidental (unintentional), initial encounter
T46.2X1D|
Poisoning by other antidysrhythmic drugs, accidental (unintentional), subsequent encounter
T46.2X1S|
Poisoning by other antidysrhythmic drugs, accidental (unintentional), sequela
T46.2X2|
Poisoning by other antidysrhythmic drugs, intentional self-harm
T46.2X2A|
Poisoning by other antidysrhythmic drugs, intentional self-harm, initial encounter
T46.2X2D|
Poisoning by other antidysrhythmic drugs, intentional self-harm, subsequent encounter
T46.2X2S|
Poisoning by other antidysrhythmic drugs, intentional self-harm, sequela
T46.2X3|
Poisoning by other antidysrhythmic drugs, assault
T46.2X3A|
Poisoning by other antidysrhythmic drugs, assault, initial encounter
T46.2X3D|
Poisoning by other antidysrhythmic drugs, assault, subsequent encounter
T46.2X3S|
Poisoning by other antidysrhythmic drugs, assault, sequela
T46.2X4|
Poisoning by other antidysrhythmic drugs, undetermined

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