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    v1.0.28
    OpenPayerBilling CodesBehavioral and emotional disorders with onset usually occurring in childhood and adolescenceICD-10-CM f91-conduct-disorders
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    ICD-10-CM Code For Conduct Disorders: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group F91 includes conduct disorders such as oppositional behaviors, aggressive conduct, and patterns of rule-breaking that impair social, academic, or occupational functioning. These ICD-10-CM diagnosis codes are used to document clinical encounters for children and adolescents presenting with behaviors that may include aggression, destruction of property, deceit or theft, and serious violations of rules, capturing severity, onset, and comorbidity. Accurate coding within the ICD-10-CM F91 group supports proper claim adjudication and complete clinical documentation and appropriate reimbursement.

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    ICD-10-CM F91: Conduct Disorders Overview

    This group covers behavioral disorders characterized by a repetitive and persistent pattern of violating the basic rights of others or major age-appropriate societal norms and rules, typically affecting children and adolescents. The diagnoses target behavioral and emotional functioning rather than a specific organ system. Accurate coding matters for reimbursement because it supports clear documentation of behavioral complexity and the need for specific interventions.

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    When to Use

    Use a code from this group when documenting a clinical encounter for a child or adolescent exhibiting persistent aggressive, deceitful, or rule-violating behaviors that cause impairment in social or academic functioning. Select the specific code that reflects the type of conduct disorder, its severity, and any associated features or comorbid mental health diagnoses.

    ICD-10-CM Codes

    6 rows

    ICD-10-CM CodeDescription
    F91.0Conduct disorder confined to family context
    F91.1Conduct disorder, childhood-onset type
    F91.2Conduct disorder, adolescent-onset type
    F91.3Oppositional defiant disorder
    F91.8Other conduct disorders
    F91.9Conduct disorder, unspecified

    DRG Codes

    1 rows

    DRG CodeDescription
    886Behavioral and Developmental Disorders

    Typical Clinical Scenarios

    • Elementary school teacher brings a 9-year-old boy to pediatrics after repeated reports of aggressive behavior toward classmates and destruction of property at school; parents also report frequent lying, stealing, and refusal to follow rules at home for over a year, with functional impairment at school and home. A behavioral diagnosis from this group is assigned because the child meets criteria for a persistent pattern of conduct problems beginning in childhood. Typical codes: F91.1, F91.2
    • Adolescent female referred from juvenile probation after an episode of assault and shoplifting; she has a pattern of deceitfulness, truancy, and violation of age-appropriate norms over the past several months, coinciding with substance use and family conflict. The presenting legal involvement and ongoing antisocial behaviors prompt assignment of a conduct-related diagnosis to document the behavioral disorder contributing to delinquency. Typical codes: F91.3, F91.2
    • Pediatric psychiatry follow-up for a 14-year-old boy with longstanding oppositional behaviors who now presents with escalating aggressive outbursts, school suspension, and comorbid attention-deficit symptoms and mood instability; prior treatment targeted ADHD but current assessment attributes the primary impairment to persistent conduct problems requiring specialized care coordination. A conduct disorder diagnosis from this group is used to capture the chronic behavioral disturbance as a primary comorbidity impacting treatment planning. Typical codes: F91.0, F91.9

    Related Codes

    F90-ATTENTION-DEFICIT-HYPERACTIVITY-DISORDERS

    ICD-10-CM Code For Attention-Deficit Hyperactivity Disorders: Group Overview

    F93-EMOTIONAL-DISORDERS-CHILDHOOD

    ICD-10-CM Code For Emotional Disorders With Onset Specific To Childhood: Group Overview

    F94-DISORDERS-OF-SOCIAL-FUNCTIONING

    ICD-10-CM Code For Disorders Of Social Functioning With Onset Specific To Childhood And Adolescence: Group Overview

    F95-TIC-DISORDER

    ICD-10-CM Code For Tic Disorder: Group Overview

    F98-OTHER-BEHAVIORAL-AND-EMOTIONAL-DISORDERS

    ICD-10-CM Code For Other Behavioral And Emotional Disorders With Onset Usually Occurring In Childhood And Adolescence: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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