All ICD10 Codes
Chapter 5

F01–F99: Mental, Behavioral and Neurodevelopmental Disorders

Mental, Behavioral and Neurodevelopmental Disorders diagnostic classification updated for 2026.

Chapter Instructions

Includes
  • disorders of psychological development
Excludes2(Not included here. Code separately if applicable.)
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
All CodesBillable Only
Internal Codes
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  • F31.12—

    Bipolar disorder, current episode manic without psychotic features, moderate

  • F31.13—

    Bipolar disorder, current episode manic without psychotic features, severe

  • F31.2—

    Bipolar disorder, current episode manic severe with psychotic features

  • F31.3—

    Bipolar disorder, current episode depressed, mild or moderate severity

  • F31.30—

    Bipolar disorder, current episode depressed, mild or moderate severity, unspecified

  • F31.31—

    Bipolar disorder, current episode depressed, mild

  • F31.32—

    Bipolar disorder, current episode depressed, moderate

  • F31.4—

    Bipolar disorder, current episode depressed, severe, without psychotic features

  • F31.5—

    Bipolar disorder, current episode depressed, severe, with psychotic features

  • F31.6—

    Bipolar disorder, current episode mixed

  • F31.60—

    Bipolar disorder, current episode mixed, unspecified

  • F31.61—

    Bipolar disorder, current episode mixed, mild

  • F31.62—

    Bipolar disorder, current episode mixed, moderate

  • F31.63—

    Bipolar disorder, current episode mixed, severe, without psychotic features

  • F31.64—

    Bipolar disorder, current episode mixed, severe, with psychotic features

  • F31.7—

    Bipolar disorder, currently in remission

  • F31.70—

    Bipolar disorder, currently in remission, most recent episode unspecified

  • F31.71—

    Bipolar disorder, in partial remission, most recent episode hypomanic

  • F31.72—

    Bipolar disorder, in full remission, most recent episode hypomanic

  • F31.73—

    Bipolar disorder, in partial remission, most recent episode manic

  • F31.74—

    Bipolar disorder, in full remission, most recent episode manic

  • F31.75—

    Bipolar disorder, in partial remission, most recent episode depressed

  • F31.76—

    Bipolar disorder, in full remission, most recent episode depressed

  • F31.77—

    Bipolar disorder, in partial remission, most recent episode mixed

  • F31.78—

    Bipolar disorder, in full remission, most recent episode mixed

  • F31.8—

    Other bipolar disorders

  • F31.81—

    Bipolar II disorder

  • F31.89—

    Other bipolar disorder

  • F31.9—

    Bipolar disorder, unspecified

  • F32—

    Depressive episode

  • F32.0—

    Major depressive disorder, single episode, mild

  • F32.1—

    Major depressive disorder, single episode, moderate

  • F32.2—

    Major depressive disorder, single episode, severe without psychotic features

  • F32.3—

    Major depressive disorder, single episode, severe with psychotic features

  • F32.4—

    Major depressive disorder, single episode, in partial remission

  • F32.5—

    Major depressive disorder, single episode, in full remission

  • F32.8—

    Other depressive episodes

  • F32.81—

    Premenstrual dysphoric disorder

  • F32.89—

    Other specified depressive episodes

  • F32.9—

    Major depressive disorder, single episode, unspecified

  • F32.A—

    Depression, unspecified

  • F33—

    Major depressive disorder, recurrent

  • F33.0—

    Major depressive disorder, recurrent, mild

  • F33.1—

    Major depressive disorder, recurrent, moderate

  • F33.2—

    Major depressive disorder, recurrent severe without psychotic features

  • F33.3—

    Major depressive disorder, recurrent, severe with psychotic symptoms

  • F33.4—

    Major depressive disorder, recurrent, in remission

  • F33.40—

    Major depressive disorder, recurrent, in remission, unspecified

  • F33.41—

    Major depressive disorder, recurrent, in partial remission

  • F33.42—

    Major depressive disorder, recurrent, in full remission

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