ICD-10 Code F91.0 – Conduct disorder confined to family context (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F91.0 – Conduct disorder confined to family context
What it is
F91.0 identifies a conduct disorder pattern in which disruptive, aggressive, or rule-breaking behavior is mainly limited to the family setting. Use it when the documented behavior is not widespread across school, peers, or the community.
Clinical signs
Typical findings include repeated defiance, hostility, aggression, or serious rule violations directed at family members. Clinical features vary; refer to documentation for whether the behavior is confined to the home and not part of a broader conduct pattern.
When to use this code
Use F91.0 when the record clearly states conduct problems occur primarily, or only, within the family context. It fits situations involving persistent conflict with parents or caregivers, with otherwise limited evidence of conduct disturbance outside the home.
Document the setting and the specific behaviors if available. If the chart does not show confinement to family context, check documentation before assigning this code.
Do not use for
Do not use this code for generalized conduct disorder affecting school, peers, or multiple settings. Also avoid it when the documentation supports another behavioral or emotional disorder instead.
Coding tip
Code F91.0 only when the family-only pattern is explicitly stated or clearly documented.