Emergency: 119
AMDA-IMIC

F91 Conduct disorders

Category / Non-billable header 6 subcodes

Block: Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98)

Excludes 1 (cannot be coded together)

  • antisocial behavior (Z72.81-)
  • antisocial personality disorder (F60.2)

Excludes 2 (not included here)

  • conduct problems associated with attention-deficit hyperactivity disorder (F90.-)
  • mood [affective] disorders (F30-F39)
  • pervasive developmental disorders (F84.-)
  • schizophrenia (F20.-)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
F91..0 Conduct disorder confined to family context Yes
F91..1 Conduct disorder, childhood-onset type Yes
F91..2 Conduct disorder, adolescent-onset type Yes
F91..3 Oppositional defiant disorder Yes
F91..8 Other conduct disorders Yes
F91..9 Conduct disorder, unspecified Yes

Last reviewed: September 2026