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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  • F31.78—

    Bipolar disorder, in full remission, most recent episode mixed

  • F31.81—

    Bipolar II disorder

  • F31.89—

    Other bipolar disorder

  • F31.9—

    Bipolar disorder, unspecified

  • 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

  • F32.81—

    Premenstrual dysphoric disorder

  • F32.89—

    Other specified depressive episodes

  • F32.9—

    Major depressive disorder, single episode, unspecified

  • F32.A—

    Depression, unspecified

  • 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

  • F33.40—

    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

  • F33.8—

    Other recurrent depressive disorders

  • F33.9—

    Major depressive disorder, recurrent, unspecified

  • F34.0—

    Cyclothymic disorder

  • F34.1—

    Dysthymic disorder

  • F34.81—

    Disruptive mood dysregulation disorder

  • F34.89—

    Other specified persistent mood disorders

  • F34.9—

    Persistent mood [affective] disorder, unspecified

  • F39—

    Unspecified mood [affective] disorder

  • F40.00—

    Agoraphobia, unspecified

  • F40.01—

    Agoraphobia with panic disorder

  • F40.02—

    Agoraphobia without panic disorder

  • F40.10—

    Social phobia, unspecified

  • F40.11—

    Social phobia, generalized

  • F40.210—

    Arachnophobia

  • F40.218—

    Other animal type phobia

  • F40.220—

    Fear of thunderstorms

  • F40.228—

    Other natural environment type phobia

  • F40.230—

    Fear of blood

  • F40.231—

    Fear of injections and transfusions

  • F40.232—

    Fear of other medical care

  • F40.233—

    Fear of injury

  • F40.240—

    Claustrophobia

  • F40.241—

    Acrophobia

  • F40.242—

    Fear of bridges

  • F40.243—

    Fear of flying

  • F40.248—

    Other situational type phobia

  • F40.290—

    Androphobia

  • F40.291—

    Gynephobia

  • F40.298—

    Other specified phobia

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