Is F55 a billable ICD-10-CM code?

No. F55 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does F55 sit in the tabular list?

Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59).

F55

F55 — Abuse of non-psychoactive substances

Non-billable headerICD-10-CM

F55 is a non-billable header ICD-10-CM code for abuse of non-psychoactive substances. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

abuse of psychoactive substances (F10-F19)

Risk adjustment

F55 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 F55

6 child codes. Green means billable.

Questions about F55

Is F55 a billable ICD-10-CM code?: No. F55 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does F55 sit in the tabular list?: Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59).