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ICD-10-CM · FY 2026 APRIL UPDATE

T54.3

Toxic effects of corrosive alkalis and alkali-like substances

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
T54.3XToxic effects of corrosive alkalis and alkali-like substancesCategory
T54.3X1Toxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional)Category
T54.3X1AToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), initial encounterBillable
T54.3X1DToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), subsequent encounterBillable
T54.3X1SToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), sequelaBillable
T54.3X2Toxic effect of corrosive alkalis and alkali-like substances, intentional self-harmCategory
T54.3X2AToxic effect of corrosive alkalis and alkali-like substances, intentional self-harm, initial encounterBillable
T54.3X2DToxic effect of corrosive alkalis and alkali-like substances, intentional self-harm, subsequent encounterBillable
T54.3X2SToxic effect of corrosive alkalis and alkali-like substances, intentional self-harm, sequelaBillable
T54.3X3Toxic effect of corrosive alkalis and alkali-like substances, assaultCategory
T54.3X3AToxic effect of corrosive alkalis and alkali-like substances, assault, initial encounterBillable
T54.3X3DToxic effect of corrosive alkalis and alkali-like substances, assault, subsequent encounterBillable
T54.3X3SToxic effect of corrosive alkalis and alkali-like substances, assault, sequelaBillable
T54.3X4Toxic effect of corrosive alkalis and alkali-like substances, undeterminedCategory
T54.3X4AToxic effect of corrosive alkalis and alkali-like substances, undetermined, initial encounterBillable
T54.3X4DToxic effect of corrosive alkalis and alkali-like substances, undetermined, subsequent encounterBillable
T54.3X4SToxic effect of corrosive alkalis and alkali-like substances, 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.