F91
F91 — Conduct disorders
Non-billable headerICD-10-CM
F91 is a non-billable header ICD-10-CM code for conduct disorders. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
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.
Other codes that can never be billed with F91
These codes carry an Excludes1 note pointing at F91. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading F91 alone.
Risk adjustment
F91 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 F91
6 child codes. Green means billable.
Questions about F91
- Is F91 a billable ICD-10-CM code?
- No. F91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does F91 sit in the tabular list?
- Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98).
- What cannot be coded together with F91?
- F91 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.