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ICD-10-CM · FY 2026 APRIL UPDATE

T54.9

Toxic effects of unspecified corrosive substance

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
T54.91Toxic effect of unspecified corrosive substance, accidental (unintentional)Category
T54.91XAToxic effect of unspecified corrosive substance, accidental (unintentional), initial encounterBillable
T54.91XDToxic effect of unspecified corrosive substance, accidental (unintentional), subsequent encounterBillable
T54.91XSToxic effect of unspecified corrosive substance, accidental (unintentional), sequelaBillable
T54.92Toxic effect of unspecified corrosive substance, intentional self-harmCategory
T54.92XAToxic effect of unspecified corrosive substance, intentional self-harm, initial encounterBillable
T54.92XDToxic effect of unspecified corrosive substance, intentional self-harm, subsequent encounterBillable
T54.92XSToxic effect of unspecified corrosive substance, intentional self-harm, sequelaBillable
T54.93Toxic effect of unspecified corrosive substance, assaultCategory
T54.93XAToxic effect of unspecified corrosive substance, assault, initial encounterBillable
T54.93XDToxic effect of unspecified corrosive substance, assault, subsequent encounterBillable
T54.93XSToxic effect of unspecified corrosive substance, assault, sequelaBillable
T54.94Toxic effect of unspecified corrosive substance, undeterminedCategory
T54.94XAToxic effect of unspecified corrosive substance, undetermined, initial encounterBillable
T54.94XDToxic effect of unspecified corrosive substance, undetermined, subsequent encounterBillable
T54.94XSToxic effect of unspecified corrosive substance, undetermined, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.