2026 ICD-10-CM Diagnosis Code T51Toxic effect of alcohol

ICD-10-CM Codes›S00–T88›T51-T65›T51

ICD-10-CM T51
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T51 is a non-billable ICD-10-CM category code for toxic effect of alcohol, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T51.0X1A, T51.0X1D, T51.0X1S, and T51.0X2A.

Code Identity

ICD-10-CM Code
T51
Billable Status
No — Non-Billable Category
Code Describes
Toxic effect of alcohol
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
CategoryT51Toxic effect of alcohol
This CodeT51Toxic effect of alcohol

Specific Coding for Toxic effect of alcoholOverview

Non-specific codes like T51 require more characters. Use one of these billable codes instead:

  • T51.0 for Toxic effect of ethanol

  • T51.0X for Toxic effect of ethanol

  • T51.1 for Toxic effect of methanol

  • T51.1X for Toxic effect of methanol

  • T51.2 for Toxic effect of 2-Propanol

  • T51.2X for Toxic effect of 2-Propanol

  • T51.3 for Toxic effect of fusel oil

  • T51.3X for Toxic effect of fusel oil

  • T51.8 for Toxic effect of other alcohols

  • T51.8X for Toxic effect of other alcohols

  • T51.9 for Toxic effect of unspecified alcohol

  • T51.91 for Toxic effect of unspecified alcohol, accidental (unintentional)

  • T51.92 for Toxic effect of unspecified alcohol, intentional self-harm

  • T51.93 for Toxic effect of unspecified alcohol, assault

  • T51.94 for Toxic effect of unspecified alcohol, undetermined

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Toxic effect of alcohol (T51). 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 T51

7th Character

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

Patient EducationClinical

Alcohol

Many Americans drink alcohol at least occasionally. The Dietary Guidelines for Americans say that adults of legal drinking age should either not drink or drink in moderation. Drinking less is better for your health than drinking more. Also, there are some people who should not drink at all.

The full article covers:

  • How does alcohol affect the body?
  • Why are the effects of alcohol different from person to person?
  • What is moderate drinking?
  • What is a standard drink?
  • Who should not drink alcohol?
  • What is excessive drinking?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

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 T51Overview

Is T51 (Toxic effect of alcohol) a billable code?

No. This is a category header that groups the codes for toxic effect of alcohol, and headers cannot be submitted on claims. Claims for toxic effect of alcohol need a more specific code from this category, such as T51.0X1A, T51.0X1D, and T51.0X1S.