---
title: "ICD-10-CM F42.9: Obsessive-compulsive disorder, unspecified | BillingBrief"
description: "Use F42.9 when the record documents obsessive-compulsive disorder (OCD) without saying which kind. If mixed obsessional thoughts and acts, hoarding or…"
canonical: "https://billingbrief.com/icd10/f42.9/"
language: "en"
---

# F42.9 Obsessive-compulsive disorder, unspecified

ICD-10-CM · [CMS code reference](#source)

Use F42.9 when the record documents obsessive-compulsive disorder (OCD) without saying which kind. If mixed obsessional thoughts and acts, hoarding or skin-picking is documented, use F42.2, F42.3 or F42.4 instead.

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Excludes2

Not part of this code, but both can be coded when both are documented.

-   obsessive-compulsive personality (disorder) (F60.5)
-   obsessive-compulsive symptoms occurring in depression (F32.-, F33.-)
-   obsessive-compulsive symptoms occurring in schizophrenia (F20.-)

## Related codes

-   [`F42.2` Mixed obsessional thoughts and acts ICD-10-CM](https://billingbrief.com/icd10/f42.2/)
-   [`F42.3` Hoarding disorder ICD-10-CM](https://billingbrief.com/icd10/f42.3/)
-   [`F42.4` Excoriation (skin-picking) disorder ICD-10-CM](https://billingbrief.com/icd10/f42.4/)
-   [`F42.8` Other obsessive-compulsive disorder ICD-10-CM](https://billingbrief.com/icd10/f42.8/)

## Common questions

### Is F42.9 a billable code?

Yes. F42.9 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

F42 Obsessive-compulsive disorder

Chapter

Mental, behavioral and neurodevelopmental disorders

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).