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ICD-10-CM 2027 diagnosis code

T51.0Toxic effect of ethanol

Not billable — use a more specific codeRequires 7th character

T51.0 is a header code, so it can't be reported by itself. Choose one of the 1 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About T51.0

T51.0 is the ICD-10-CM diagnosis code for toxic effect of ethanol. It belongs to category T51 (toxic effect of alcohol), block T51-T65 (toxic effects of substances chiefly nonmedicinal as to source) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 1 subcodes must be used instead.

Within T51 (toxic effect of alcohol), T51.0 is specifically for toxic effect of ethanol. Related codes cover methanol (T51.1), 2-Propanol (T51.2), fusel oil (T51.3), other alcohols (T51.8) and unspecified alcohol (T51.9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

The conditions in its Excludes2 note aren't part of T51.0, but may be coded alongside it if the patient has both: acute alcohol intoxication or 'hangover' effects (F10.129, F10.229, F10.929), drunkenness (F10.129, F10.229, F10.929) and pathological alcohol intoxication (F10.129, F10.229, F10.929).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category T51

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Coding notes

Applicable toConditions and synonyms classified to this code
  • Toxic effect of ethyl alcohol
Excludes2Not included here — may be reported together if both conditions exist

Notes that apply from higher levels

Instructions written at a parent level also apply to T51.0.

Broader instructions also apply from T51-T65 Toxic effects of substances chiefly nonmedicinal as to source and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Codes whose notes reference T51.0

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about T51.0

Is T51.0 billable?

No. T51.0 is a header code. Report one of its more specific subcodes instead.