T53.0X1S — Toxic effect of carbon tetrachloride, accidental (unintentional), sequela
T53.0X1S is a billable, specific ICD-10-CM code for toxic effect of carbon tetrachloride, 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 T53
- 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 carbon tetrachloride NOS
Other codes that can never be billed with T53.0X1S
These codes carry an Excludes1 note pointing at T53.0X1S. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T53.0X1S alone.
Risk adjustment
T53.0X1S 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
T53.0X1S is named in 1 Medicare coverage policy — 1 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
Code history
T53.0X1S has not changed since FY2024 — no addition, revision or deletion across the FY2024–FY2027 ICD-10-CM releases.
Related codes at this level
Codes that share T53.0X1. If T53.0X1S is not quite right, the correct code is usually one of these.
Questions about T53.0X1S
- Is T53.0X1S a billable ICD-10-CM code?
- Yes. T53.0X1S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T53.0X1S 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).