Toxic effect of corrosive substances (T54) ICD-10-CM

About the T54 Code Range

The T54 ICD-10 codes describe the toxic effects caused by exposure to corrosive substances. These codes classify poisoning by various corrosive chemicals—such as phenol, corrosive organic compounds, acids, alkalis, and unspecified corrosive agents—detailing whether exposure was accidental, intentional (self-harm), assault-related, or undetermined.

These codes are specifically used to document medical conditions resulting from harmful contact with corrosive agents that damage tissues, including chemical burns or systemic poisoning. For example, the ICD-10 code for toxic effects of phenol and its homologues (commonly known as carbolic acid poisoning or chlorinated phenol adverse reaction) falls under T54.0. Similarly, toxic effects from corrosive acids like hydrochloric or sulfuric acid are found under T54.2, with synonyms such as acid chemical burns or vitriol burning. Codes like T54.3 cover alkali poisonings, including injuries from substances like lye or sodium hydroxide. Each category further specifies the context of the toxic event—whether accidental, self-inflicted, assault, or undetermined—with detailed subcodes indicating initial encounters, subsequent visits, or late effects (sequela). The T54 code group thus guides accurate coding of corrosive substance poisonings for clinical, legal, and billing purposes.