T54.3X1A — Toxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), initial encounter
T54.3X1A is a billable, specific ICD-10-CM code for toxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category T54
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Toxic effects of corrosive alkalis and alkali-like substances NOS
Risk adjustment
T54.3X1A 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
T54.3X1A is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
- A56612Billing and Coding: CT of the Head
- A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
- A57205Billing and Coding: Oximetry Services
Related codes at this level
Codes that share T54.3X1. If T54.3X1A is not quite right, the correct code is usually one of these.
Questions about T54.3X1A
- Is T54.3X1A a billable ICD-10-CM code?
- Yes. T54.3X1A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T54.3X1A 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).