ICD-10 Code F42.9 – Obsessive-compulsive disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F42.9 – Obsessive-compulsive disorder, unspecified
What it is
F42.9 identifies obsessive-compulsive disorder when the record confirms OCD but does not specify the type or pattern. Use it for a documented diagnosis of OCD without further detail.
Clinical signs
Typical findings include intrusive, unwanted thoughts and repetitive behaviors or mental acts performed to reduce distress. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents obsessive-compulsive disorder but provides no subtype, severity, or other qualifying detail. It also fits when the note confirms OCD and the available documentation does not support a more specific code. Check documentation if another anxiety-related or obsessive disorder is mentioned.
Do not use for
Do not use F42.9 for isolated obsessive traits, personality disorder, or a provisional history of OCD without a current diagnosis. Do not assign it if the record specifies a more exact OCD code.
Coding tip
Code the most specific OCD diagnosis documented; if the note is vague, F42.9 is appropriate until clearer detail is available.