Version 2024

2024 ICD-10-CM Diagnosis Code T51.1

Toxic effect of methanol

ICD-10-CM Code:
T51.1
ICD-10 Code for:
Toxic effect of methanol
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Toxic effects of substances chiefly nonmedicinal as to source
      (T51-T65)
      • Toxic effect of alcohol
        (T51)

T51.1 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of toxic effect of methanol. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Toxic effect of methanol

Non-specific codes like T51.1 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for toxic effect of methanol:

  • T51.1X for Toxic effect of methanol - NON-BILLABLE CODE

  • T51.1X1 for Toxic effect of methanol, accidental (unintentional) - NON-BILLABLE CODE

  • Use T51.1X1A for initial encounter - BILLABLE CODE

  • Use T51.1X1D for subsequent encounter - BILLABLE CODE

  • Use T51.1X1S for sequela - BILLABLE CODE

  • T51.1X2 for Toxic effect of methanol, intentional self-harm - NON-BILLABLE CODE

  • Use T51.1X2A for initial encounter - BILLABLE CODE

  • Use T51.1X2D for subsequent encounter - BILLABLE CODE

  • Use T51.1X2S for sequela - BILLABLE CODE

  • T51.1X3 for Toxic effect of methanol, assault - NON-BILLABLE CODE

  • Use T51.1X3A for initial encounter - BILLABLE CODE

  • Use T51.1X3D for subsequent encounter - BILLABLE CODE

  • Use T51.1X3S for sequela - BILLABLE CODE

  • T51.1X4 for Toxic effect of methanol, undetermined - NON-BILLABLE CODE

  • Use T51.1X4A for initial encounter - BILLABLE CODE

  • Use T51.1X4D for subsequent encounter - BILLABLE CODE

  • Use T51.1X4S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Toxic effect of alcohol (T51). Use the following options for the aplicable episode of care:

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

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Toxic effect of methyl alcohol

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.