T41.5X1S — Poisoning by therapeutic gases, accidental (unintentional), sequela
T41.5X1S is a billable, specific ICD-10-CM code for poisoning by therapeutic gases, accidental (unintentional), 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 T41
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Poisoning by therapeutic gases NOS
Excludes1 inherited from the categories above T41.5X1S
These are not written on T41.5X1S, but they bind it: a note on a category applies to every code beneath it. Billing T41.5X1S with anything listed here is a denial.
Written on T41 — Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases
Risk adjustment
T41.5X1S 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
T41.5X1S 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
- A57473Billing and Coding: Allergy Testing
- A57473Billing and Coding: Allergy Testing
Code history
T41.5X1S has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share T41.5X1. If T41.5X1S is not quite right, the correct code is usually one of these.
Questions about T41.5X1S
- Is T41.5X1S a billable ICD-10-CM code?
- Yes. T41.5X1S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T41.5X1S sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).
- What cannot be coded together with T41.5X1S?
- T41.5X1S carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T41.5X1S (T41) and apply to it just the same.