F91.1 — Conduct disorder, childhood-onset type
F91.1 is a billable, specific ICD-10-CM code for conduct disorder, childhood-onset type. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Unsocialized conduct disorder
- Conduct disorder, solitary aggressive type
- Unsocialized aggressive disorder
Risk adjustment
F91.1 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.
Medicare coverage
F91.1 is named in 9 Medicare coverage policies — 8 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
- A56850Billing and Coding: Psychiatric Partial Hospitalization Programs
- A56937Billing and Coding: Psychiatry and Psychology Services
- A57065Billing and Coding: Outpatient Psychiatry and Psychology Services
How F91.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to F91.1.
- Disorder›aggressive, unsocialized
- Disorder›unsocialized aggressive
- Disorder›conduct›childhood onset type
- Disorder›conduct›solitary aggressive type
- Disorder›conduct›unsocialized(aggressive)
- Disturbance›conduct›unsocialized
Related codes at this level
Codes that share F91. If F91.1 is not quite right, the correct code is usually one of these.
Questions about F91.1
- Is F91.1 a billable ICD-10-CM code?
- Yes. F91.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does F91.1 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).