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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  • F20.1—

    Disorganized schizophrenia

  • F20.2—

    Catatonic schizophrenia

  • F20.3—

    Undifferentiated schizophrenia

  • F20.5—

    Residual schizophrenia

  • F20.81—

    Schizophreniform disorder

  • F20.89—

    Other schizophrenia

  • F20.9—

    Schizophrenia, unspecified

  • F21—

    Schizotypal disorder

  • F22—

    Delusional disorders

  • F23—

    Brief psychotic disorder

  • F24—

    Shared psychotic disorder

  • F25.0—

    Schizoaffective disorder, bipolar type

  • F25.1—

    Schizoaffective disorder, depressive type

  • F25.8—

    Other schizoaffective disorders

  • F25.9—

    Schizoaffective disorder, unspecified

  • F28—

    Other psychotic disorder not due to a substance or known physiological condition

  • F29—

    Unspecified psychosis not due to a substance or known physiological condition

  • F30.10—

    Manic episode without psychotic symptoms, unspecified

  • F30.11—

    Manic episode without psychotic symptoms, mild

  • F30.12—

    Manic episode without psychotic symptoms, moderate

  • F30.13—

    Manic episode, severe, without psychotic symptoms

  • F30.2—

    Manic episode, severe with psychotic symptoms

  • F30.3—

    Manic episode in partial remission

  • F30.4—

    Manic episode in full remission

  • F30.8—

    Other manic episodes

  • F30.9—

    Manic episode, unspecified

  • F31.0—

    Bipolar disorder, current episode hypomanic

  • F31.10—

    Bipolar disorder, current episode manic without psychotic features, unspecified

  • F31.11—

    Bipolar disorder, current episode manic without psychotic features, mild

  • 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

  • F31.30—

    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

  • F31.60—

    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

  • F31.70—

    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

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