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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  • F16.959—

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

  • F16.98—

    Hallucinogen use, unspecified with other specified hallucinogen-induced disorder

  • 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—

    Nicotine dependence

  • F17.2—

    Nicotine dependence

  • F17.20—

    Nicotine dependence, unspecified

  • 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

  • F17.21—

    Nicotine dependence, cigarettes

  • 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

  • F17.22—

    Nicotine dependence, chewing tobacco

  • 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

  • F17.29—

    Nicotine dependence, other tobacco product

  • 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—

    Inhalant related disorders

  • F18.1—

    Inhalant abuse

  • F18.10—

    Inhalant abuse, uncomplicated

  • F18.11—

    Inhalant abuse, in remission

  • F18.12—

    Inhalant abuse with intoxication

  • F18.120—

    Inhalant abuse with intoxication, uncomplicated

  • F18.121—

    Inhalant abuse with intoxication delirium

  • F18.129—

    Inhalant abuse with intoxication, unspecified

  • F18.14—

    Inhalant abuse with inhalant-induced mood disorder

  • F18.15—

    Inhalant abuse with inhalant-induced psychotic disorder

  • F18.150—

    Inhalant abuse with inhalant-induced psychotic disorder with delusions

  • F18.151—

    Inhalant abuse with inhalant-induced psychotic disorder with hallucinations

  • F18.159—

    Inhalant abuse with inhalant-induced psychotic disorder, unspecified

  • F18.17—

    Inhalant abuse with inhalant-induced dementia

  • F18.18—

    Inhalant abuse with other inhalant-induced disorders

  • F18.180—

    Inhalant abuse with inhalant-induced anxiety disorder

  • F18.188—

    Inhalant abuse with other inhalant-induced disorder

  • F18.19—

    Inhalant abuse with unspecified inhalant-induced disorder

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