F91.9

Conduct disorder, unspecified

Billable / specific

F91.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Behavioral disorder NOS
  • Conduct disorder NOS
  • Disruptive behavior disorder NOS
  • Disruptive disorder NOS

Includes (from F91)

  • disorders of psychological development
  • Note: Codes within categories F90-F98 may be used regardless of the age of a patient. These disorders generally have onset within the childhood or adolescent years, but may continue throughout life or not be diagnosed until adulthood

Excludes1

Not coded here — never report together with this code.

  • antisocial behavior (Z72.81-) (from F91)
  • antisocial personality disorder (F60.2) (from F91)

Excludes2

Not included here — may be reported together when both conditions exist.

  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99) (from F91)
  • conduct problems associated with attention-deficit hyperactivity disorder (F90.-) (from F91)
  • mood [affective] disorders (F30-F39) (from F91)
  • pervasive developmental disorders (F84.-) (from F91)
  • schizophrenia (F20.-) (from F91)

Also known as

  • Behavioral disorder NOS
  • Conduct disorder NOS
  • Disruptive behavior disorder NOS
  • Disruptive disorder NOS
  • Disorder, conduct
  • Disorder, disruptive
  • Disturbance, conduct
  • Disturbance, conduct, disruptive

Parent code

  • F91Conduct disordersHeader

Related codes

  • F91.0Conduct disorder confined to family contextBillable
  • F91.1Conduct disorder, childhood-onset typeBillable
  • F91.2Conduct disorder, adolescent-onset typeBillable
  • F91.3Oppositional defiant disorderBillable
  • F91.8Other conduct disordersBillable

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