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T58.2X2 vs T58.2X3

T58.2X2 (Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, intentional self-harm) compared with T58.2X3 (Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, assault), from the official CMS tabular data. T58.2X2 and T58.2X3 code the same substance (Coal) with a different intent.

Relationship

Informational

Drug table relationship

T58.2X2
Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, intentional self-harm
↔
T58.2X3
Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, assault

Same substance, different circumstance of exposure.

Same substance — assault (Coal)

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. T58.2X2 and T58.2X3 code the same substance (Coal) 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

T58.2X2Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, intentional self-harmT58.2X3Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, 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 carbon monoxide from incomplete combustion of other domestic fuels, intentional self-harm is a non-billable ICD-10-CM category code (T58.2X2).Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels, assault is a non-billable ICD-10-CM category code (T58.2X3).
7th characterThe appropriate 7th character is to be added to each code from category T58The appropriate 7th character is to be added to each code from category T58
Includes
asphyxiation from carbon monoxide
toxic effect of carbon monoxide from all sources
asphyxiation from carbon monoxide
toxic effect of carbon monoxide from all sources
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