F01-F99
Mental, Behavioral and Neurodevelopmental disorders
Chapter coding notes
disorders of psychological development
symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Blocks in this chapter
F01-F09
Mental disorders due to known physiological conditions
F10-F19
Mental and behavioral disorders due to psychoactive substance use
F20-F29
Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders
F30-F39
Mood [affective] disorders
F40-F48
Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
F50-F59
Behavioral syndromes associated with physiological disturbances and physical factors
F60-F69
Disorders of adult personality and behavior
F70-F79
Intellectual Disabilities
F80-F89
Pervasive and specific developmental disorders
F90-F98
Behavioral and emotional disorders with onset usually occurring in childhood and adolescence
F99
Unspecified mental disorder
Official Guidelines for Chapter 5
FY 2026 ›Sections that reference codes in Chapter 5
- I.A.12.aExcludes1F45.8General rules
- I.A.13Etiology/manifestation convention (“code first”, “use additional code” and “in diseases classified elsewhere” notes)F02General rules
- I.B.14Documentation by Clinicians Other than the Patient's ProviderF10General rules
- I.C.5.aPain disorders related to psychological factorsF45.41
- I.C.5.b.1)In RemissionF10-F19
- I.C.5.b.3)Psychoactive Substance Use, UnspecifiedF10.9
- I.C.5.b.4)Medical Conditions Due to Psychoactive Substance Use, Abuse and DependenceF10.2
- I.C.5.b.5)Blood Alcohol LevelF10
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