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T65.3X1 vs T65.3X3

T65.3X1 (Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional)) compared with T65.3X3 (Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, assault), from the official CMS tabular data. T65.3X1 and T65.3X3 code the same substance (Aniline) with a different intent.

Relationship

Informational

Drug table relationship

T65.3X1
Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional)
↔
T65.3X3
Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, assault

Same substance, different circumstance of exposure.

Same substance — assault (Aniline)

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. T65.3X1 and T65.3X3 code the same substance (Aniline) with a different circumstance of exposure.

From the CMS 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

T65.3X1Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional)T65.3X3Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, assault
Billing statusNon-billable headerNon-billable header
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 nitroderivatives and aminoderivatives of benzene and its homologues, accidental (unintentional) is a non-billable ICD-10-CM category code (T65.3X1).Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues, assault is a non-billable ICD-10-CM category code (T65.3X3).
7th characterThe appropriate 7th character is to be added to each code from category T65The appropriate 7th character is to be added to each code from category T65
Includes
Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologues NOS
—
Use additional code
code(s):
for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
personal history of foreign body fully removed (Z87.821)
code(s):
for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
personal history of foreign body fully removed (Z87.821)
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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