T58.8X3D
T58.8X3D — Toxic effect of carbon monoxide from other source, assault, subsequent encounter
Billable / specific codeICD-10-CMPOA exempt
T58.8X3D is a billable, specific ICD-10-CM code for toxic effect of carbon monoxide from other source, assault, subsequent encounter. It is valid for submission on a claim.
7th character "D" — subsequent encounter
The appropriate 7th character is to be added to each code from category T58
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T58.8X3D does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
T58.8X3D is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56612Billing and Coding: CT of the Head
- A56625Billing and Coding: Echocardiography
- A57326Billing and Coding: Electrocardiograms
Related codes at this level
Codes that share T58.8X3. If T58.8X3D is not quite right, the correct code is usually one of these.
Questions about T58.8X3D
- Is T58.8X3D a billable ICD-10-CM code?
- Yes. T58.8X3D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T58.8X3D sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Toxic effects of substances chiefly nonmedicinal as to source (T51-T65).