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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  • F33.8—

    Other recurrent depressive disorders

  • F33.9—

    Major depressive disorder, recurrent, unspecified

  • F34—

    Persistent mood [affective] disorders

  • F34.0—

    Cyclothymic disorder

  • F34.1—

    Dysthymic disorder

  • F34.8—

    Other persistent mood [affective] disorders

  • 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—

    Phobic anxiety disorders

  • F40.0—

    Agoraphobia

  • F40.00—

    Agoraphobia, unspecified

  • F40.01—

    Agoraphobia with panic disorder

  • F40.02—

    Agoraphobia without panic disorder

  • F40.1—

    Social phobias

  • F40.10—

    Social phobia, unspecified

  • F40.11—

    Social phobia, generalized

  • F40.2—

    Specific (isolated) phobias

  • F40.21—

    Animal type phobia

  • F40.210—

    Arachnophobia

  • F40.218—

    Other animal type phobia

  • F40.22—

    Natural environment type phobia

  • F40.220—

    Fear of thunderstorms

  • F40.228—

    Other natural environment type phobia

  • F40.23—

    Blood, injection, injury 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

  • F40.24—

    Situational type phobia

  • F40.240—

    Claustrophobia

  • F40.241—

    Acrophobia

  • F40.242—

    Fear of bridges

  • F40.243—

    Fear of flying

  • F40.248—

    Other situational type phobia

  • F40.29—

    Other specified phobia

  • F40.290—

    Androphobia

  • F40.291—

    Gynephobia

  • F40.298—

    Other specified phobia

  • F40.8—

    Other phobic anxiety disorders

  • F40.9—

    Phobic anxiety disorder, unspecified

  • F41—

    Other anxiety disorders

  • F41.0—

    Panic disorder [episodic paroxysmal anxiety]

  • F41.1—

    Generalized anxiety disorder

  • F41.3—

    Other mixed anxiety disorders

  • F41.8—

    Other specified anxiety disorders

  • F41.9—

    Anxiety disorder, unspecified

  • F42—

    Obsessive-compulsive disorder

  • F42.2—

    Mixed obsessional thoughts and acts

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