2026 ICD-10-CM Diagnosis Code T53Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons

ICD-10-CM Codes›S00–T88›T51-T65›T53

ICD-10-CM T53
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T53 is a non-billable ICD-10-CM category code for toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T53.0X1A, T53.0X1D, T53.0X1S, and T53.0X2A.

Code Identity

ICD-10-CM Code
T53
Billable Status
No — Non-Billable Category
Code Describes
Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons
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
CategoryT53Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons
This CodeT53Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons

Specific Coding for Toxic effect of halogen derivatives of aromat hydrocrbOverview

Non-specific codes like T53 require more characters. Use one of these billable codes instead:

  • T53.0 for Toxic effects of carbon tetrachloride

  • T53.0X for Toxic effects of carbon tetrachloride

  • T53.1 for Toxic effects of chloroform

  • T53.1X for Toxic effects of chloroform

  • T53.2 for Toxic effects of trichloroethylene

  • T53.2X for Toxic effects of trichloroethylene

  • T53.3 for Toxic effects of tetrachloroethylene

  • T53.3X for Toxic effects of tetrachloroethylene

  • T53.4 for Toxic effects of dichloromethane

  • T53.4X for Toxic effects of dichloromethane

  • T53.5 for Toxic effects of chlorofluorocarbons

  • T53.5X for Toxic effects of chlorofluorocarbons

  • T53.6 for Toxic effects of other halogen derivatives of aliphatic hydrocarbons

  • T53.6X for Toxic effects of other halogen derivatives of aliphatic hydrocarbons

  • T53.7 for Toxic effects of other halogen derivatives of aromatic hydrocarbons

  • T53.7X for Toxic effects of other halogen derivatives of aromatic hydrocarbons

  • T53.9 for Toxic effects of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons

  • T53.91 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, accidental (unintentional)

  • T53.92 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, intentional self-harm

  • T53.93 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, assault

  • T53.94 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, undetermined

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons (T53). 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 T53

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 T53Overview

Is T53 a billable code?

No. This is a category header that groups the codes for toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons, and headers cannot be submitted on claims. Claims for toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons need a more specific code from this category, such as T53.0X1A, T53.0X1D, and T53.0X1S.