Skip to main content

T57.0X1 vs T57.0X4

T57.0X1 (Toxic effect of arsenic and its compounds, accidental (unintentional)) compared with T57.0X4 (Toxic effect of arsenic and its compounds, undetermined), from the official CMS tabular data. T57.0X1 and T57.0X4 code the same substance (Arsenate) with a different intent. MedCoder-derived

Relationship

Informational

Drug table relationship

T57.0X1
Toxic effect of arsenic and its compounds, accidental (unintentional)
↔
T57.0X4
Toxic effect of arsenic and its compounds, undetermined

Same substance, different circumstance of exposure.

Same substance — undetermined intent (Arsenate)

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. T57.0X1 and T57.0X4 code the same substance (Arsenate) 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

T57.0X1Toxic effect of arsenic and its compounds, accidental (unintentional)T57.0X4Toxic effect of arsenic and its compounds, undetermined
Billing statusNon-billable header

Report instead: T57.0X1A, T57.0X1D, T57.0X1S

Non-billable header

Report instead: T57.0X4A, T57.0X4D, T57.0X4S

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 arsenic and its compounds, accidental (unintentional) is a non-billable ICD-10-CM category code (T57.0X1).Toxic effect of arsenic and its compounds, undetermined is a non-billable ICD-10-CM category code (T57.0X4).
7th characterThe appropriate 7th character is to be added to each code from category T57The appropriate 7th character is to be added to each code from category T57
Includes
Toxic effect of arsenic and its compounds 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)
Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources