Mental, Behavioral and Neurodevelopmental disorders

872 billable diagnosis codes across 11 code blocks. FY2027 release.

Includes

  • disorders of psychological development

Excludes 2 (not included here)

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

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

Last reviewed: September 2026