MCMedicalCodingSoftware
T58.1

T58.1: Toxic effect of carbon monoxide from utility gas

Non-billable headerICD-10-CM

T58.1 is a non-billable header ICD-10-CM code for toxic effect of carbon monoxide from utility gas. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T58

A
initial encounter
D
subsequent encounter
S
sequela

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Toxic effect of acetylene
  • Toxic effect of gas NOS used for lighting, heating, cooking
  • Toxic effect of water gas

Other codes that can never be billed with T58.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • R09.0Asphyxia and hypoxemia
  • T71Asphyxiation

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T58.1

4 child codes. Green means billable.

Other codes under T58

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.