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Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

Code Range: F01 — F99 11 Sections FY 2026

This chapter of the ICD-10-CM classification covers diagnosis codes from F01 through F99. Browse the sections below to find specific diagnosis codes within this chapter.

Chapter Notes

Includes:

  • disorders of psychological development

Excludes2 (not included here):

  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Sections

  • F01-F09 Mental disorders due to known physiological conditions (F01-F09)
    123 codes
  • F10-F19 Mental and behavioral disorders due to psychoactive substance use (F10-F19)
    590 codes
  • F20-F29 Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29)
    21 codes
  • F30-F39 Mood [affective] disorders (F30-F39)
    76 codes
  • F40-F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)
    92 codes
  • F50-F59 Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59)
    81 codes
  • F60-F69 Disorders of adult personality and behavior (F60-F69)
    52 codes
  • F70-F79 Intellectual Disabilities (F70-F79)
    9 codes
  • F80-F89 Pervasive and specific developmental disorders (F80-F89)
    27 codes
  • F90-F98 Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98)
    40 codes
  • F99 Unspecified mental disorder (F99)
    1 code

Top-Level Codes in This Chapter

  • F01 Vascular dementia
  • F02 Dementia in other diseases classified elsewhere
  • F03 Unspecified dementia
  • F04 Amnestic disorder due to known physiological condition Billable
  • F05 Delirium due to known physiological condition Billable
  • F06 Other mental disorders due to known physiological condition
  • F07 Personality and behavioral disorders due to known physiological condition
  • F09 Unspecified mental disorder due to known physiological condition Billable
  • F10 Alcohol related disorders
  • F11 Opioid related disorders
  • F12 Cannabis related disorders
  • F13 Sedative, hypnotic, or anxiolytic related disorders
  • F14 Cocaine related disorders
  • F15 Other stimulant related disorders
  • F16 Hallucinogen related disorders
  • F17 Nicotine dependence
  • F18 Inhalant related disorders
  • F19 Other psychoactive substance related disorders
  • F20 Schizophrenia
  • F21 Schizotypal disorder Billable
  • F22 Delusional disorders Billable
  • F23 Brief psychotic disorder Billable
  • F24 Shared psychotic disorder Billable
  • F25 Schizoaffective disorders
  • F28 Other psychotic disorder not due to a substance or known physiological condition Billable
  • F29 Unspecified psychosis not due to a substance or known physiological condition Billable
  • F30 Manic episode
  • F31 Bipolar disorder
  • F32 Depressive episode
  • F33 Major depressive disorder, recurrent
  • F34 Persistent mood [affective] disorders
  • F39 Unspecified mood [affective] disorder Billable
  • F40 Phobic anxiety disorders
  • F41 Other anxiety disorders
  • F42 Obsessive-compulsive disorder
  • F43 Reaction to severe stress, and adjustment disorders
  • F44 Dissociative and conversion disorders
  • F45 Somatoform disorders
  • F48 Other nonpsychotic mental disorders
  • F50 Eating disorders
  • F51 Sleep disorders not due to a substance or known physiological condition
  • F52 Sexual dysfunction not due to a substance or known physiological condition
  • F53 Mental and behavioral disorders associated with the puerperium, not elsewhere classified
  • F54 Psychological and behavioral factors associated with disorders or diseases classified elsewhere Billable
  • F55 Abuse of non-psychoactive substances
  • F59 Unspecified behavioral syndromes associated with physiological disturbances and physical factors Billable
  • F60 Specific personality disorders
  • F63 Impulse disorders
  • F64 Gender identity disorders
  • F65 Paraphilias
  • F66 Other sexual disorders Billable
  • F68 Other disorders of adult personality and behavior
  • F69 Unspecified disorder of adult personality and behavior Billable
  • F70 Mild intellectual disabilities Billable
  • F71 Moderate intellectual disabilities Billable
  • F72 Severe intellectual disabilities Billable
  • F73 Profound intellectual disabilities Billable
  • F78 Other intellectual disabilities
  • F79 Unspecified intellectual disabilities Billable
  • F80 Specific developmental disorders of speech and language
  • F81 Specific developmental disorders of scholastic skills
  • F82 Specific developmental disorder of motor function Billable
  • F84 Pervasive developmental disorders
  • F88 Other disorders of psychological development Billable
  • F89 Unspecified disorder of psychological development Billable
  • F90 Attention-deficit hyperactivity disorders
  • F91 Conduct disorders
  • F93 Emotional disorders with onset specific to childhood
  • F94 Disorders of social functioning with onset specific to childhood and adolescence
  • F95 Tic disorder
  • F98 Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence
  • F99 Mental disorder, not otherwise specified Billable

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