F42Header code — not billable

Obsessive-compulsive disorder

Chapter
5. Mental, Behavioral and Neurodevelopmental disorders
Category
F42
Effective date
October 1, 2026

Related codes in category F42

F42.2Mixed obsessional thoughts and actsYesF42.3Hoarding disorderYesF42.4Excoriation (skin-picking) disorderYesF42.8Other obsessive-compulsive disorderYesF42.9Obsessive-compulsive disorder, unspecifiedYes

Frequently asked questions

What is ICD-10 code F42?

F42 is an ICD-10-CM diagnosis code for Obsessive-compulsive disorder.

Is F42 a billable code?

No. F42 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is F42 in?

F42 falls under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

When did F42 become effective?

F42 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to F42?

F42 belongs to category F42, which includes 5 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.