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T63.411 vs T63.412

T63.411 (Toxic effect of venom of centipedes and venomous millipedes, accidental (unintentional)) compared with T63.412 (Toxic effect of venom of centipedes and venomous millipedes, intentional self-harm), from the official CMS tabular data. T63.411 and T63.412 code the same substance (Centipede) with a different intent. MedCoder-derived

Relationship

Informational

Drug table relationship

T63.411
Toxic effect of venom of centipedes and venomous millipedes, accidental (unintentional)
↔
T63.412
Toxic effect of venom of centipedes and venomous millipedes, intentional self-harm

Same substance, different circumstance of exposure.

Same substance — intentional self-harm (Centipede)

Accidental poisoning, intentional self-harm, assault, undetermined intent, adverse effect and underdosing are mutually exclusive columns — exactly one applies to a given encounter.

Source: CMS Table of Drugs and Chemicals

Can these codes be reported together?

Same substance, different intent. T63.411 and T63.412 code the same substance (Centipede) with a different circumstance of exposure.

From the CMS/CDC Table of Drugs and Chemicals: accidental poisoning, intentional self-harm, assault, undetermined intent, adverse effect and underdosing are mutually exclusive columns — only one of them applies to a given encounter.

Side by side

T63.411Toxic effect of venom of centipedes and venomous millipedes, accidental (unintentional)T63.412Toxic effect of venom of centipedes and venomous millipedes, intentional self-harm
Billing statusNon-billable header

Report instead: T63.411A, T63.411D, T63.411S

Non-billable header

Report instead: T63.412A, T63.412D, T63.412S

ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionToxic effect of venom of centipedes and venomous millipedes, accidental (unintentional) is a non-billable ICD-10-CM category code (T63.411).Toxic effect of venom of centipedes and venomous millipedes, intentional self-harm is a non-billable ICD-10-CM category code (T63.412).
7th characterThe appropriate 7th character is to be added to each code from category T63The appropriate 7th character is to be added to each code from category T63
Includes
bite or touch of venomous animal
pricked or stuck by thorn or leaf
bite or touch of venomous animal
pricked or stuck by thorn or leaf
Use additional code
code, if applicable, for anaphylactic shock (T78.2)
code(s):
for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
code, if applicable, for anaphylactic shock (T78.2)
code(s):
for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources