ICD-10 Code
International Classification of Diseases, 10th Revision
Apr 24, 2019
ICD 10 CM - Table of Contents

Sections in Mental, Behavioral and Neurodevelopmental disorders

ICD 10 Codes Section Name

Mental disorders due to known physiological conditions

This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.

Mental and behavioral disorders due to psychoactive substance use


Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders


Mood [affective] disorders


Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders


Behavioral syndromes associated with physiological disturbances and physical factors


Disorders of adult personality and behavior


Intellectual Disabilities


Pervasive and specific developmental disorders


Behavioral and emotional disorders with onset usually occurring in childhood and adolescence

Codes within categories F90-F98 may be used regardless of the age of a patient. These disorders generally have onset within the childhood or adolescent years, but may continue throughout life or not be diagnosed until adulthood

Unspecified mental disorder

  • disorders of psychological development
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
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Clinical Concepts
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When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.