T58
T58: Toxic effect of carbon monoxide
Non-billable headerICD-10-CM
T58 is a non-billable header ICD-10-CM code for toxic effect of carbon monoxide. 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
Includes
Conditions this code covers.
- asphyxiation from carbon monoxide
- toxic effect of carbon monoxide from all sources
Other codes that can never be billed with T58
Their own Excludes1 notes name this code, so the conflict is not listed above.
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
5 child codes. Green means billable.
- T58.0Toxic effect of carbon monoxide from motor vehicle exhaust
- T58.1Toxic effect of carbon monoxide from utility gas
- T58.2Toxic effect of carbon monoxide from incomplete combustion of other domestic fuels
- T58.8Toxic effect of carbon monoxide from other source
- T58.9Toxic effect of carbon monoxide from unspecified source