2020 ICD-10-CM Diagnosis Code F91

Conduct disorders

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • F91 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM F91 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of F91 - other international versions of ICD-10 F91 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as F91. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • antisocial behavior (
    ICD-10-CM Diagnosis Code Z72.81

    Antisocial behavior

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • conduct disorders (F91.-)
    Z72.81-
    )
  • antisocial personality disorder (
    ICD-10-CM Diagnosis Code F60.2

    Antisocial personality disorder

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Amoral personality (disorder)
    • Asocial personality (disorder)
    • Dissocial personality disorder
    • Psychopathic personality (disorder)
    • Sociopathic personality (disorder)
    Type 1 Excludes
    • conduct disorders (F91.-)
    Type 2 Excludes
    • borderline personality disorder (F60.3)
    F60.2
    )
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (F91) and the excluded code together.
  • conduct problems associated with attention-deficit hyperactivity disorder (
    ICD-10-CM Diagnosis Code F90
    • F90 Attention-deficit hyperactivity disorders
      • F90.0 Attention-deficit hyperactivity disorder, pre...
      • F90.1 Attention-deficit hyperactivity disorder, pre...
      • F90.2 Attention-deficit hyperactivity disorder, com...
      • F90.8 Attention-deficit hyperactivity disorder, oth...
      • F90.9 Attention-deficit hyperactivity disorder, uns...
    F90.-
    )
  • mood [affective] disorders (F30-F39
    ICD-10-CM Range F30-F39

    Mood [affective] disorders

    • F30 Manic episode
    • F31 Bipolar disorder
    • F32 Major depressive disorder, single episod...
    • F33 Major depressive disorder, recurrent
    • F34 Persistent mood [affective] disorders
    • F39 Unspecified mood [affective] disorder
    )
  • pervasive developmental disorders (
    ICD-10-CM Diagnosis Code F84
    • F84 Pervasive developmental disorders
      • F84.0 Autistic disorder
      • F84.2 Rett's syndrome
      • F84.3 Other childhood disintegrative disorder
      • F84.5 Asperger's syndrome
      • F84.8 Other pervasive developmental disorders
      • F84.9 Pervasive developmental disorder, unspecified...
    F84.-
    )
  • schizophrenia (
    ICD-10-CM Diagnosis Code F20
    • F20 Schizophrenia
      • F20.0 Paranoid schizophrenia
      • F20.1 Disorganized schizophrenia
      • F20.2 Catatonic schizophrenia
      • F20.3 Undifferentiated schizophrenia
      • F20.5 Residual schizophrenia
      • F20.8 Other schizophrenia
        • F20.81 Schizophreniform disorder
        • F20.89 Other schizophrenia
      • F20.9 Schizophrenia, unspecified
    F20.-
    )
The following code(s) above F91 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to F91:
  • F01-F99
    2020 ICD-10-CM Range F01-F99

    Mental, Behavioral and Neurodevelopmental disorders

    Includes
    • disorders of psychological development
    Type 2 Excludes
    • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
    Mental, Behavioral and Neurodevelopmental disorders
  • F90-F98
    2020 ICD-10-CM Range F90-F98

    Behavioral 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
    Behavioral and emotional disorders with onset usually occurring in childhood and adolescence
Clinical Information
  • A disorder diagnosed in childhood or adolescence age group characterized by aggressive behavior, deceitfulness, destruction of property or violation of rules that is persistent and repetitive, and within a one year period.
  • A repetitive and persistent pattern of behavior in which the basic rights of others or major age-appropriate societal norms or rules are violated. These behaviors include aggressive conduct that causes or threatens physical harm to other people or animals, nonaggressive conduct that causes property loss or damage, deceitfulness or theft, and serious violations of rules. The onset is before age 18. (from dsm-iv, 1994)
  • Mental disorder of childhood and adolescence characterized by repetitive and persistent patterns of conduct in which rights of others and age-appropriate societal rules are violated; the conduct is more serious than ordinary mischief and pranks.
  • Repetitive and persistent aggressive or nonaggressive behavior in which basic rights of others or social norms are violated. Self esteem is generally low, and an inability to develop social relationships and lack of concern for others may or may not be present.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to F91:
  • Type 1 Excludes: Z72.81
    , F60.2
    ICD-10-CM Diagnosis Code Z72.81

    Antisocial behavior

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • conduct disorders (F91.-)
    ICD-10-CM Diagnosis Code F60.2

    Antisocial personality disorder

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Amoral personality (disorder)
    • Asocial personality (disorder)
    • Dissocial personality disorder
    • Psychopathic personality (disorder)
    • Sociopathic personality (disorder)
    Type 1 Excludes
    • conduct disorders (F91.-)
    Type 2 Excludes
    • borderline personality disorder (F60.3)
  • Type 2 Excludes: F63.1
    ICD-10-CM Diagnosis Code F63.1

    Pyromania

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Pathological fire-setting
    Type 2 Excludes
    • fire-setting (by) (in):
    • adult with antisocial personality disorder (F60.2)
    • alcohol or psychoactive substance intoxication (F10-F19)
    • conduct disorders (F91.-)
    • mental disorders due to known physiological condition (F01-F09)
    • schizophrenia (F20.-)
ICD-10-CM Codes Adjacent To F91
F84.8 Other pervasive developmental disorders
F84.9 Pervasive developmental disorder, unspecified
F88 Other disorders of psychological development
F89 Unspecified disorder of psychological development
F90 Attention-deficit hyperactivity disorders
F90.0 Attention-deficit hyperactivity disorder, predominantly inattentive type
F90.1 Attention-deficit hyperactivity disorder, predominantly hyperactive type
F90.2 Attention-deficit hyperactivity disorder, combined type
F90.8 Attention-deficit hyperactivity disorder, other type
F90.9 Attention-deficit hyperactivity disorder, unspecified type
F91 Conduct disorders
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
F93 Emotional disorders with onset specific to childhood
F93.0 Separation anxiety disorder of childhood
F93.8 Other childhood emotional disorders
F93.9 Childhood emotional disorder, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.