T28.90XS
T28.90XS — Corrosions of unspecified internal organs, sequela
Billable / specific codeICD-10-CMPOA exempt
T28.90XS is a billable, specific ICD-10-CM code for corrosions of unspecified internal organs, sequela. It is valid for submission on a claim.
7th character "S" — sequela
The appropriate 7th character is to be added to each code from category T28
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T28.90XS 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
T28.90XS is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53064Billing and Coding: Outpatient Occupational Therapy
- A59186Billing and Coding: Magnesium
Related codes at this level
Codes that share T28.90. If T28.90XS is not quite right, the correct code is usually one of these.
Questions about T28.90XS
- Is T28.90XS a billable ICD-10-CM code?
- Yes. T28.90XS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T28.90XS sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Burns and corrosions confined to eye and internal organs (T26-T28).