F91 Conduct disorders

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Conduct disorders is F91 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
F90-F98: Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98)
Category F91
7 codes (6 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with F91.
  • antisocial behavior (Z72.81-)
  • antisocial personality disorder (F60.2)
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • conduct problems associated with attention-deficit hyperactivity disorder (F90.-)
  • mood [affective] disorders (F30-F39)
  • pervasive developmental disorders (F84.-)
  • schizophrenia (F20.-)

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.a
Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.5.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

More Specific Codes

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

Related Codes in F91

F91.0 Conduct disorder confined to family context F91.1 Conduct disorder, childhood-onset type F91.2 Conduct disorder, adolescent-onset type F91.3 Oppositional defiant disorder F91.8 Other conduct disorders F91.9 Conduct disorder, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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