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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  • F15.982—

    Other stimulant use, unspecified with stimulant-induced sleep disorder

  • F15.988—

    Other stimulant use, unspecified with other stimulant-induced disorder

  • F15.99—

    Other stimulant use, unspecified with unspecified stimulant-induced disorder

  • F16—

    Hallucinogen related disorders

  • F16.1—

    Hallucinogen abuse

  • F16.10—

    Hallucinogen abuse, uncomplicated

  • F16.11—

    Hallucinogen abuse, in remission

  • F16.12—

    Hallucinogen abuse with intoxication

  • F16.120—

    Hallucinogen abuse with intoxication, uncomplicated

  • F16.121—

    Hallucinogen abuse with intoxication with delirium

  • F16.122—

    Hallucinogen abuse with intoxication with perceptual disturbance

  • F16.129—

    Hallucinogen abuse with intoxication, unspecified

  • F16.14—

    Hallucinogen abuse with hallucinogen-induced mood disorder

  • F16.15—

    Hallucinogen abuse with hallucinogen-induced psychotic disorder

  • F16.150—

    Hallucinogen abuse with hallucinogen-induced psychotic disorder with delusions

  • F16.151—

    Hallucinogen abuse with hallucinogen-induced psychotic disorder with hallucinations

  • F16.159—

    Hallucinogen abuse with hallucinogen-induced psychotic disorder, unspecified

  • F16.18—

    Hallucinogen abuse with other hallucinogen-induced disorder

  • F16.180—

    Hallucinogen abuse with hallucinogen-induced anxiety disorder

  • F16.183—

    Hallucinogen abuse with hallucinogen persisting perception disorder (flashbacks)

  • F16.188—

    Hallucinogen abuse with other hallucinogen-induced disorder

  • F16.19—

    Hallucinogen abuse with unspecified hallucinogen-induced disorder

  • F16.2—

    Hallucinogen dependence

  • F16.20—

    Hallucinogen dependence, uncomplicated

  • F16.21—

    Hallucinogen dependence, in remission

  • F16.22—

    Hallucinogen dependence with intoxication

  • 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

  • F16.25—

    Hallucinogen dependence with hallucinogen-induced psychotic 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

  • F16.28—

    Hallucinogen dependence with other hallucinogen-induced disorder

  • 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

  • F16.9—

    Hallucinogen use, unspecified

  • F16.90—

    Hallucinogen use, unspecified, uncomplicated

  • F16.91—

    Hallucinogen use, unspecified, in remission

  • F16.92—

    Hallucinogen use, unspecified with intoxication

  • 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

  • F16.95—

    Hallucinogen use, unspecified with hallucinogen-induced psychotic 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

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