Is T57.1X3S a billable ICD-10-CM code?

Yes. T57.1X3S is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does T57.1X3S 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).

What cannot be coded together with T57.1X3S?

T57.1X3S 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 T57.1X3S (T57.1) and apply to it just the same.

T57.1X3S

T57.1X3S — Toxic effect of phosphorus and its compounds, assault, sequela

Billable / specific codeICD-10-CMPOA exempt

T57.1X3S is a billable, specific ICD-10-CM code for toxic effect of phosphorus and its compounds, assault, 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 T57

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above T57.1X3S

These are not written on T57.1X3S, but they bind it: a note on a category applies to every code beneath it. Billing T57.1X3S with anything listed here is a denial.

Written on T57.1 — Toxic effect of phosphorus and its compounds

organophosphate insecticides (T60.0)

Risk adjustment

T57.1X3S 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

T57.1X3S is named in 4 Medicare coverage policies — 4 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
A57414Billing and Coding: Upper Gastrointestinal Endoscopy (Diagnostic and Therapeutic)

Code history

T57.1X3S 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 T57.1X3. If T57.1X3S is not quite right, the correct code is usually one of these.

Questions about T57.1X3S

Is T57.1X3S a billable ICD-10-CM code?: Yes. T57.1X3S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T57.1X3S 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).
What cannot be coded together with T57.1X3S?: T57.1X3S 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 T57.1X3S (T57.1) and apply to it just the same.