F42.9Billable

Obsessive-compulsive disorder, unspecified

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

Related codes in category F42

F42Obsessive-compulsive disorderF42.2Mixed obsessional thoughts and actsYesF42.3Hoarding disorderYesF42.4Excoriation (skin-picking) disorderYesF42.8Other obsessive-compulsive disorderYes

Frequently asked questions

What is ICD-10 code F42.9?

F42.9 is an ICD-10-CM diagnosis code for Obsessive-compulsive disorder, unspecified.

Is F42.9 a billable code?

Yes. F42.9 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is F42.9 in?

F42.9 falls under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

When did F42.9 become effective?

F42.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to F42.9?

F42.9 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.