Is T59.5X a billable ICD-10-CM code?

No. T59.5X is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T59.5X 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).

T59.5X

T59.5X — Toxic effect of fluorine gas and hydrogen fluoride

Non-billable headerICD-10-CM

T59.5X is a non-billable header ICD-10-CM code for toxic effect of fluorine gas and hydrogen fluoride. 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

Risk adjustment

T59.5X 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 to one of these instead T59.5X

4 child codes. Green means billable.

Questions about T59.5X

Is T59.5X a billable ICD-10-CM code?: No. T59.5X is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T59.5X 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).