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T51.2X1 vs T51.2X4

T51.2X1 (Toxic effect of 2-Propanol, accidental (unintentional)) compared with T51.2X4 (Toxic effect of 2-Propanol, undetermined), from the official CMS tabular data. T51.2X1 and T51.2X4 code the same substance (2-propanol) with a different intent.

Can these codes be reported together?

Same substance, different intent. T51.2X1 and T51.2X4 code the same substance (2-propanol) 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

T51.2X1Toxic effect of 2-Propanol, accidental (unintentional)T51.2X4Toxic effect of 2-Propanol, undetermined
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 2-Propanol, accidental (unintentional) is a non-billable ICD-10-CM category code (T51.2X1).Toxic effect of 2-Propanol, undetermined is a non-billable ICD-10-CM category code (T51.2X4).
7th characterThe appropriate 7th character is to be added to each code from category T51The appropriate 7th character is to be added to each code from category T51
Includes
Toxic effect of 2-Propanol 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