F91.1

Conduct disorder, childhood-onset type

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

RxHCC V08

RXHCC133

Anxiety and Other Psychiatric Disorders

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · F91.1

Synonyms

Unsocialized conduct disorder Conduct disorder, solitary aggressive type Unsocialized aggressive disorder

Inherited from F91Conduct disorders

Excludes 1

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

Excludes 2

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

Inherited from F90-F98Behavioral and emotional disorders with onset usually occurring in childhood and adolescence

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

Inherited from chapter 5Mental, Behavioral and Neurodevelopmental disorders

Includes

disorders of psychological development

Excludes 2

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Official Guidelines for F91.1

FY 2026 ›

I.C.5Chapter-specific guidanceChapter 5: Mental, Behavioral and Neurodevelopmental disorders

Subsections

Find F91.1 in the alphabetic index

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