Version 2024

2024 ICD-10-CM Diagnosis Code T58.8X

Toxic effect of carbon monoxide from other source

ICD-10-CM Code:
T58.8X
ICD-10 Code for:
Toxic effect of carbon monoxide from other source
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 carbon monoxide
        (T58)

T58.8X 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 carbon monoxide from other source. 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 carbon monoxide from other source

Non-specific codes like T58.8X 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 carbon monoxide from other source:

  • T58.8X1 for Toxic effect of carbon monoxide from other source, accidental (unintentional) - NON-BILLABLE CODE

  • Use T58.8X1A for initial encounter - BILLABLE CODE

  • Use T58.8X1D for subsequent encounter - BILLABLE CODE

  • Use T58.8X1S for sequela - BILLABLE CODE

  • T58.8X2 for Toxic effect of carbon monoxide from other source, intentional self-harm - NON-BILLABLE CODE

  • Use T58.8X2A for initial encounter - BILLABLE CODE

  • Use T58.8X2D for subsequent encounter - BILLABLE CODE

  • Use T58.8X2S for sequela - BILLABLE CODE

  • T58.8X3 for Toxic effect of carbon monoxide from other source, assault - NON-BILLABLE CODE

  • Use T58.8X3A for initial encounter - BILLABLE CODE

  • Use T58.8X3D for subsequent encounter - BILLABLE CODE

  • Use T58.8X3S for sequela - BILLABLE CODE

  • T58.8X4 for Toxic effect of carbon monoxide from other source, undetermined - NON-BILLABLE CODE

  • Use T58.8X4A for initial encounter - BILLABLE CODE

  • Use T58.8X4D for subsequent encounter - BILLABLE CODE

  • Use T58.8X4S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Toxic effect of carbon monoxide (T58). Use the following options for the aplicable episode of care:

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

Patient Education


Carbon Monoxide Poisoning

Carbon monoxide (CO) is a gas that has no odor or color. But it is very dangerous. It can cause sudden illness and death. CO is found in combustion fumes, such as those made by cars and trucks, lanterns, stoves, gas ranges and heating systems. CO from these fumes can build up in places that don't have a good flow of fresh air. You can be poisoned by breathing them in. The most common symptoms of CO poisoning are:

  • Headache
  • Dizziness
  • Weakness
  • Nausea
  • Vomiting
  • Chest pain
  • Confusion

It is often hard to tell if someone has CO poisoning, because the symptoms may be like those of other illnesses. People who are sleeping or intoxicated can die from CO poisoning before they have symptoms. A CO detector can warn you if you have high levels of CO in your home.

Centers for Disease Control and Prevention


[Learn More in MedlinePlus]

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.