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

No. T57.1X is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T57.1X 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 T57.1X?

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

T57.1X

T57.1X — Toxic effect of phosphorus and its compounds

Non-billable headerICD-10-CM

T57.1X is a non-billable header ICD-10-CM code for toxic effect of phosphorus and its compounds. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

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 T57.1X

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

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

organophosphate insecticides (T60.0)

Risk adjustment

T57.1X 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.

Code history

T57.1X has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead T57.1X

4 child codes. Green means billable.

Questions about T57.1X

Is T57.1X a billable ICD-10-CM code?: No. T57.1X is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T57.1X 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 T57.1X?: T57.1X 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 T57.1X (T57.1) and apply to it just the same.