Obsessive-compulsive disorder (F42) ICD-10-CM
The F42 code range covers obsessive-compulsive disorder with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the F42 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the F42 range.
Hoarding
A persistent difficulty discarding or parting with possessions.
Hoarding Disorder
Disordered behavior associated with clinically significant distress or impairment in social, occupational or other important areas of functioning and persistent difficulty parting with possessions due to a perceived need to save the items and distress associated with discarding them. (from DSM-V) The quantity of collected items sets the behavior apart from normal collecting behaviors.
About the F42 Code Range
The ICD-10 codes under F42 cover obsessive-compulsive disorder (OCD) and related conditions, providing specific classifications to help pinpoint the exact type of OCD being diagnosed. These codes assist healthcare providers and coders in identifying and documenting various obsessive-compulsive symptoms accurately.
The code F42 represents general obsessive-compulsive disorder. More detailed codes like F42.2 specify mixed obsessional thoughts and acts, while F42.3 is assigned for hoarding disorder, often referred to simply as "hoarding." The F42.4 code is used for excoriation (skin-picking) disorder. The section also includes F42.8 for other OCD conditions involving various obsessions such as fears of contamination, harm, or rituals like hand washing. Finally, F42.9 is reserved for unspecified cases where the precise form of OCD is unclear or caused by substances. These specific ICD-10 codes are essential for accurately capturing the diversity of obsessive-compulsive disorders in clinical and billing settings.
Questions About This Page
How many billable codes are in the F42 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the F42 range classify?
The range classifies obsessive-compulsive disorder. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
