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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  • F16.19—

    Hallucinogen abuse with unspecified hallucinogen-induced disorder

  • F16.20—

    Hallucinogen dependence, uncomplicated

  • F16.21—

    Hallucinogen dependence, in remission

  • F16.220—

    Hallucinogen dependence with intoxication, uncomplicated

  • F16.221—

    Hallucinogen dependence with intoxication with delirium

  • F16.229—

    Hallucinogen dependence with intoxication, unspecified

  • F16.24—

    Hallucinogen dependence with hallucinogen-induced mood disorder

  • F16.250—

    Hallucinogen dependence with hallucinogen-induced psychotic disorder with delusions

  • F16.251—

    Hallucinogen dependence with hallucinogen-induced psychotic disorder with hallucinations

  • F16.259—

    Hallucinogen dependence with hallucinogen-induced psychotic disorder, unspecified

  • F16.280—

    Hallucinogen dependence with hallucinogen-induced anxiety disorder

  • F16.283—

    Hallucinogen dependence with hallucinogen persisting perception disorder (flashbacks)

  • F16.288—

    Hallucinogen dependence with other hallucinogen-induced disorder

  • F16.29—

    Hallucinogen dependence with unspecified hallucinogen-induced disorder

  • F16.90—

    Hallucinogen use, unspecified, uncomplicated

  • F16.91—

    Hallucinogen use, unspecified, in remission

  • F16.920—

    Hallucinogen use, unspecified with intoxication, uncomplicated

  • F16.921—

    Hallucinogen use, unspecified with intoxication with delirium

  • F16.929—

    Hallucinogen use, unspecified with intoxication, unspecified

  • F16.94—

    Hallucinogen use, unspecified with hallucinogen-induced mood disorder

  • F16.950—

    Hallucinogen use, unspecified with hallucinogen-induced psychotic disorder with delusions

  • F16.951—

    Hallucinogen use, unspecified with hallucinogen-induced psychotic disorder with hallucinations

  • F16.959—

    Hallucinogen use, unspecified with hallucinogen-induced psychotic disorder, unspecified

  • F16.980—

    Hallucinogen use, unspecified with hallucinogen-induced anxiety disorder

  • F16.983—

    Hallucinogen use, unspecified with hallucinogen persisting perception disorder (flashbacks)

  • F16.988—

    Hallucinogen use, unspecified with other hallucinogen-induced disorder

  • F16.99—

    Hallucinogen use, unspecified with unspecified hallucinogen-induced disorder

  • F17.200—

    Nicotine dependence, unspecified, uncomplicated

  • F17.201—

    Nicotine dependence, unspecified, in remission

  • F17.203—

    Nicotine dependence unspecified, with withdrawal

  • F17.208—

    Nicotine dependence, unspecified, with other nicotine-induced disorders

  • F17.209—

    Nicotine dependence, unspecified, with unspecified nicotine-induced disorders

  • F17.210—

    Nicotine dependence, cigarettes, uncomplicated

  • F17.211—

    Nicotine dependence, cigarettes, in remission

  • F17.213—

    Nicotine dependence, cigarettes, with withdrawal

  • F17.218—

    Nicotine dependence, cigarettes, with other nicotine-induced disorders

  • F17.219—

    Nicotine dependence, cigarettes, with unspecified nicotine-induced disorders

  • F17.220—

    Nicotine dependence, chewing tobacco, uncomplicated

  • F17.221—

    Nicotine dependence, chewing tobacco, in remission

  • F17.223—

    Nicotine dependence, chewing tobacco, with withdrawal

  • F17.228—

    Nicotine dependence, chewing tobacco, with other nicotine-induced disorders

  • F17.229—

    Nicotine dependence, chewing tobacco, with unspecified nicotine-induced disorders

  • F17.290—

    Nicotine dependence, other tobacco product, uncomplicated

  • F17.291—

    Nicotine dependence, other tobacco product, in remission

  • F17.293—

    Nicotine dependence, other tobacco product, with withdrawal

  • F17.298—

    Nicotine dependence, other tobacco product, with other nicotine-induced disorders

  • F17.299—

    Nicotine dependence, other tobacco product, with unspecified nicotine-induced disorders

  • F18.10—

    Inhalant abuse, uncomplicated

  • F18.11—

    Inhalant abuse, in remission

  • F18.120—

    Inhalant abuse with intoxication, uncomplicated

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