2026 ICD-10-CM Diagnosis Code T54Toxic effect of corrosive substances

ICD-10-CM Codes›S00–T88›T51-T65›T54

ICD-10-CM T54
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T54 is a non-billable ICD-10-CM category code for toxic effect of corrosive substances, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T54.0X1A, T54.0X1D, T54.0X1S, and T54.0X2A.

Code Identity

ICD-10-CM Code
T54
Billable Status
No — Non-Billable Category
Code Describes
Toxic effect of corrosive substances
Chapter
T51-T65
Toxic effects of substances chiefly nonmedicinal as to source

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT51-T65Toxic effects of substances chiefly nonmedicinal as to source
CategoryT54Toxic effect of corrosive substances
This CodeT54Toxic effect of corrosive substances

Specific Coding for Toxic effect of corrosive substancesOverview

Non-specific codes like T54 require more characters. Use one of these billable codes instead:

  • T54.0 for Toxic effects of phenol and phenol homologues

  • T54.0X for Toxic effects of phenol and phenol homologues

  • T54.1 for Toxic effects of other corrosive organic compounds

  • T54.1X for Toxic effects of other corrosive organic compounds

  • T54.2 for Toxic effects of corrosive acids and acid-like substances

  • T54.2X for Toxic effects of corrosive acids and acid-like substances

  • T54.3 for Toxic effects of corrosive alkalis and alkali-like substances

  • T54.3X for Toxic effects of corrosive alkalis and alkali-like substances

  • T54.9 for Toxic effects of unspecified corrosive substance

  • T54.91 for Toxic effect of unspecified corrosive substance, accidental (unintentional)

  • T54.92 for Toxic effect of unspecified corrosive substance, intentional self-harm

  • T54.93 for Toxic effect of unspecified corrosive substance, assault

  • T54.94 for Toxic effect of unspecified corrosive substance, undetermined

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Toxic effect of corrosive substances (T54). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

7th Character Note

  • The appropriate 7th character is to be added to each code from category T54

7th Character

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T54Overview

Is T54 (Toxic effect of corrosive substances) a billable code?

No. This is a category header that groups the codes for toxic effect of corrosive substances, and headers cannot be submitted on claims. Claims for toxic effect of corrosive substances need a more specific code from this category, such as T54.0X1A, T54.0X1D, and T54.0X1S.