F91Not billable, use a more specific code below

Conduct disorders

In Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98), chapter 5: Mental, Behavioral and Neurodevelopmental Disorders

6 billable codes under F91: none are a CC or MCC; none map to an HCC.

Instructional notes

Excludes1: not coded here, use a different code

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

Excludes2: not included here, code separately if applicable

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

MS-DRGs

As the principal diagnosis, all 6 billable codes under F91 group to these MS-DRGs (v44.0).

Other codes that refer to F91

Notes on these codes point to F91.

  • F60.2 Excludes1: conduct disorders (F91.-)
  • F63.1 Excludes2: conduct disorders (F91.-)
  • Z72.81 Excludes1: conduct disorders (F91.-)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Child Behavior Disorders

All kids misbehave some times. And some may have temporary behavior problems due to stress. For example, the birth of a sibling, a divorce, or a death in the family may cause a child to act out. Behavior disorders are more serious. They involve a pattern of hostile, aggressive, or disruptive behaviors for more than 6 months. The behavior is also not appropriate for the child's age.

Read more about child behavior disorders on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.