Is T59.1X3 a billable ICD-10-CM code?

No. T59.1X3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T59.1X3 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 T59.1X3?

T59.1X3 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 T59.1X3 (T59) and apply to it just the same.

T59.1X3

T59.1X3 — Toxic effect of sulfur dioxide, assault

Non-billable headerICD-10-CM

T59.1X3 is a non-billable header ICD-10-CM code for toxic effect of sulfur dioxide, assault. 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 T59

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above T59.1X3

These are not written on T59.1X3, but they bind it: a note on a category applies to every code beneath it. Billing T59.1X3 with anything listed here is a denial.

Written on T59 — Toxic effect of other gases, fumes and vapors

chlorofluorocarbons (T53.5)

Other codes that can never be billed with T59.1X3

These codes carry an Excludes1 note pointing at T59.1X3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T59.1X3 alone.

T71Asphyxiation

Risk adjustment

T59.1X3 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

T59.1X3 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 T59.1X3

3 child codes. Green means billable.

Related codes at this level

Codes that share T59.1X. If T59.1X3 is not quite right, the correct code is usually one of these.

Questions about T59.1X3

Is T59.1X3 a billable ICD-10-CM code?: No. T59.1X3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T59.1X3 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 T59.1X3?: T59.1X3 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 T59.1X3 (T59) and apply to it just the same.