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T65.1X1 vs T65.1X2

T65.1X1 (Toxic effect of strychnine and its salts, accidental (unintentional)) compared with T65.1X2 (Toxic effect of strychnine and its salts, intentional self-harm), from the official CMS tabular data. T65.1X1 and T65.1X2 code the same substance (Brucine) with a different intent.

Relationship

Informational

Drug table relationship

T65.1X1
Toxic effect of strychnine and its salts, accidental (unintentional)
↔
T65.1X2
Toxic effect of strychnine and its salts, intentional self-harm

Same substance, different circumstance of exposure.

Same substance — intentional self-harm (Brucine)

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. T65.1X1 and T65.1X2 code the same substance (Brucine) 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

T65.1X1Toxic effect of strychnine and its salts, accidental (unintentional)T65.1X2Toxic effect of strychnine and its salts, intentional self-harm
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 strychnine and its salts, accidental (unintentional) is a non-billable ICD-10-CM category code (T65.1X1).Toxic effect of strychnine and its salts, intentional self-harm is a non-billable ICD-10-CM category code (T65.1X2).
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 strychnine and its salts 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