T58.8 — Toxic effect of carbon monoxide from other source
Is T58.8 billable?
No — T58.8 is a non-billable header code. T58.8 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 12 billable codes beneath T58.8.
Billable codes under this header
- T58.8X1AToxic effect of carbon monoxide from other source, accidental (unintentional), initial encounter
- T58.8X1DToxic effect of carbon monoxide from other source, accidental (unintentional), subsequent encounter
- T58.8X1SToxic effect of carbon monoxide from other source, accidental (unintentional), sequela
- T58.8X2AToxic effect of carbon monoxide from other source, intentional self-harm, initial encounter
- T58.8X2DToxic effect of carbon monoxide from other source, intentional self-harm, subsequent encounter
- T58.8X2SToxic effect of carbon monoxide from other source, intentional self-harm, sequela
- T58.8X3AToxic effect of carbon monoxide from other source, assault, initial encounter
- T58.8X3DToxic effect of carbon monoxide from other source, assault, subsequent encounter
- T58.8X3SToxic effect of carbon monoxide from other source, assault, sequela
- T58.8X4AToxic effect of carbon monoxide from other source, undetermined, initial encounter
- T58.8X4DToxic effect of carbon monoxide from other source, undetermined, subsequent encounter
- T58.8X4SToxic effect of carbon monoxide from other source, undetermined, sequela
T58.8 at a glance
| Code | T58.8 |
|---|---|
| Description | Toxic effect of carbon monoxide from other source |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Inclusion terms
Alternative wording in documentation that is classified to T58.8.
- Toxic effect of carbon monoxide from blast furnace gas
- Toxic effect of carbon monoxide from fuels in industrial use
- Toxic effect of carbon monoxide from kiln vapor
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T58.8 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- contact with and (suspected) exposure to toxic substances (Z77.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside T58.8 to fully describe the condition. T58.8 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T51-T65
Report an additional code alongside T58.8 to fully describe the condition. T58.8 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T58.8, but a patient may have both at the same time. When documentation supports it, T58.8 and the excluded code may both be reported.
What codes fall under T58.8? (1)
How long has T58.8 existed?
T58.8 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the T58 family? (4)
- T58.0Toxic effect of carbon monoxide from motor vehicle exhaustnot billable
- T58.1Toxic effect of carbon monoxide from utility gasnot billable
- T58.2Toxic effect of carbon monoxide from incomplete combustion of other domestic fuelsnot billable
- T58.9Toxic effect of carbon monoxide from unspecified sourcenot billable