F42

Obsessive-compulsive disorder

FY2027Chapter 5: Mental, Behavioral and Neurodevelopmental disorders/F40–F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

F42 is a non-billable ICD-10-CM code category for obsessive-compulsive disorder. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are F42.2 Mixed obsessional thoughts and acts, F42.3 Hoarding disorder, F42.4 Excoriation (skin-picking) disorder, F42.8 Other obsessive-compulsive disorder and 1 more. Its coding notes include 4 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

This code
  • obsessive-compulsive personality (disorder) (F60.5)
  • obsessive-compulsive symptoms occurring in depression (F32.-, F33.-)
  • obsessive-compulsive symptoms occurring in schizophrenia (F20.-)
Also from chapter/block level (1 note)
Inherited from Chapter 5 Mental, Behavioral and Neurodevelopmental disorders
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Includes

Further defines or gives examples of the content of the category.

Also from chapter/block level (1 note)
Inherited from Chapter 5 Mental, Behavioral and Neurodevelopmental disorders
  • disorders of psychological development

More specific codes under F42 5