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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T40.5X1A|
Poisoning by cocaine, accidental (unintentional), initial encounter
T40.5X1D|
Poisoning by cocaine, accidental (unintentional), subsequent encounter
T40.5X1S|
Poisoning by cocaine, accidental (unintentional), sequela
T40.5X2|
Poisoning by cocaine, intentional self-harm
T40.5X2A|
Poisoning by cocaine, intentional self-harm, initial encounter
T40.5X2D|
Poisoning by cocaine, intentional self-harm, subsequent encounter
T40.5X2S|
Poisoning by cocaine, intentional self-harm, sequela
T40.5X3|
Poisoning by cocaine, assault
T40.5X3A|
Poisoning by cocaine, assault, initial encounter
T40.5X3D|
Poisoning by cocaine, assault, subsequent encounter
T40.5X3S|
Poisoning by cocaine, assault, sequela
T40.5X4|
Poisoning by cocaine, undetermined
T40.5X4A|
Poisoning by cocaine, undetermined, initial encounter
T40.5X4D|
Poisoning by cocaine, undetermined, subsequent encounter
T40.5X4S|
Poisoning by cocaine, undetermined, sequela
T40.5X5|
Adverse effect of cocaine
T40.5X5A|
Adverse effect of cocaine, initial encounter
T40.5X5D|
Adverse effect of cocaine, subsequent encounter
T40.5X5S|
Adverse effect of cocaine, sequela
T40.5X6|
Underdosing of cocaine
T40.5X6A|
Underdosing of cocaine, initial encounter
T40.5X6D|
Underdosing of cocaine, subsequent encounter
T40.5X6S|
Underdosing of cocaine, sequela
T40.6|
Poisoning by, adverse effect of and underdosing of other and unspecified narcotics
T40.60|
Poisoning by, adverse effect of and underdosing of unspecified narcotics
T40.601|
Poisoning by unspecified narcotics, accidental (unintentional)
T40.601A|
Poisoning by unspecified narcotics, accidental (unintentional), initial encounter
T40.601D|
Poisoning by unspecified narcotics, accidental (unintentional), subsequent encounter
T40.601S|
Poisoning by unspecified narcotics, accidental (unintentional), sequela
T40.602|
Poisoning by unspecified narcotics, intentional self-harm
T40.602A|
Poisoning by unspecified narcotics, intentional self-harm, initial encounter
T40.602D|
Poisoning by unspecified narcotics, intentional self-harm, subsequent encounter
T40.602S|
Poisoning by unspecified narcotics, intentional self-harm, sequela
T40.603|
Poisoning by unspecified narcotics, assault
T40.603A|
Poisoning by unspecified narcotics, assault, initial encounter
T40.603D|
Poisoning by unspecified narcotics, assault, subsequent encounter
T40.603S|
Poisoning by unspecified narcotics, assault, sequela
T40.604|
Poisoning by unspecified narcotics, undetermined
T40.604A|
Poisoning by unspecified narcotics, undetermined, initial encounter
T40.604D|
Poisoning by unspecified narcotics, undetermined, subsequent encounter
T40.604S|
Poisoning by unspecified narcotics, undetermined, sequela
T40.605|
Adverse effect of unspecified narcotics
T40.605A|
Adverse effect of unspecified narcotics, initial encounter
T40.605D|
Adverse effect of unspecified narcotics, subsequent encounter
T40.605S|
Adverse effect of unspecified narcotics, sequela
T40.606|
Underdosing of unspecified narcotics
T40.606A|
Underdosing of unspecified narcotics, initial encounter
T40.606D|
Underdosing of unspecified narcotics, subsequent encounter
T40.606S|
Underdosing of unspecified narcotics, sequela
T40.69|
Poisoning by, adverse effect of and underdosing of other narcotics

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