T58.94XD
T58.94XD: Toxic effect of carbon monoxide from unspecified source, undetermined, subsequent encounter
Billable / specific codeICD-10-CMPOA exempt
T58.94XD is a billable, specific ICD-10-CM code for toxic effect of carbon monoxide from unspecified source, undetermined, subsequent encounter. It is valid for submission on a claim.
Check T58.94XD with the rest of the claim: free scrubber7th 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
Other codes that can never be billed with T58.94XD
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.
Medicare coverage
T58.94XD is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56612Billing and Coding: CT of the Head
- A56625Billing and Coding: Echocardiography
- A56781Billing and Coding: Transthoracic Echocardiography (TTE)
Code history
Unchanged in every release from FY2024 to FY2027.