---
title: "ICD-10-CM F42.4: Excoriation (skin-picking) disorder | BillingBrief"
description: "F42.4 covers skin-picking disorder, also called excoriation disorder, listed under obsessive-compulsive disorder (F42). If the record documents factitial…"
canonical: "https://billingbrief.com/icd10/f42.4/"
language: "en"
---

# F42.4 Excoriation (skin-picking) disorder

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

F42.4 covers skin-picking disorder, also called excoriation disorder, listed under obsessive-compulsive disorder (F42). If the record documents factitial dermatitis instead, use L98.1.

## What to know

-   Excludes1: F42.4 is not reported with L98.1 (factitial dermatitis) or F98.8 (other specified behavioral and emotional disorders with onset usually occurring in early childhood and adolescence). Pick the one the documentation supports.

## Coding notes

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

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   factitial dermatitis (L98.1)
-   other specified behavioral and emotional disorders with onset usually occurring in early childhood and adolescence (F98.8)

### 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/)
-   [`F42.8` Other obsessive-compulsive disorder ICD-10-CM](https://billingbrief.com/icd10/f42.8/)
-   [`F42.9` Obsessive-compulsive disorder, unspecified ICD-10-CM](https://billingbrief.com/icd10/f42.9/)

## Common questions

### Is F42.4 a billable code?

Yes. F42.4 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/).