2026 ICD-10-CM Diagnosis Code T57Toxic effect of other inorganic substances

ICD-10-CM Codes›S00–T88›T51-T65›T57

ICD-10-CM T57
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T57 is a non-billable ICD-10-CM category code for toxic effect of other inorganic substances, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T57.0X1A, T57.0X1D, T57.0X1S, and T57.0X2A.

Code Identity

ICD-10-CM Code
T57
Billable Status
No — Non-Billable Category
Code Describes
Toxic effect of other inorganic 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
CategoryT57Toxic effect of other inorganic substances
This CodeT57Toxic effect of other inorganic substances

Specific Coding for Toxic effect of other inorganic substancesOverview

Non-specific codes like T57 require more characters. Use one of these billable codes instead:

  • T57.0 for Toxic effect of arsenic and its compounds

  • T57.0X for Toxic effect of arsenic and its compounds

  • T57.1 for Toxic effect of phosphorus and its compounds

  • T57.1X for Toxic effect of phosphorus and its compounds

  • T57.2 for Toxic effect of manganese and its compounds

  • T57.2X for Toxic effect of manganese and its compounds

  • T57.3 for Toxic effect of hydrogen cyanide

  • T57.3X for Toxic effect of hydrogen cyanide

  • T57.8 for Toxic effect of other specified inorganic substances

  • T57.8X for Toxic effect of other specified inorganic substances

  • T57.9 for Toxic effect of unspecified inorganic substance

  • T57.91 for Toxic effect of unspecified inorganic substance, accidental (unintentional)

  • T57.92 for Toxic effect of unspecified inorganic substance, intentional self-harm

  • T57.93 for Toxic effect of unspecified inorganic substance, assault

  • T57.94 for Toxic effect of unspecified inorganic substance, undetermined

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Toxic effect of other inorganic substances (T57). 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 T57

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 T57Overview

Is T57 (Toxic effect of other inorganic substances) a billable code?

No. This is a category header that groups the codes for toxic effect of other inorganic substances, and headers cannot be submitted on claims. Claims for toxic effect of other inorganic substances need a more specific code from this category, such as T57.0X1A, T57.0X1D, and T57.0X1S.