ICD-10 Code F40.8 – Other phobic anxiety disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F40.8 – Other phobic anxiety disorders
What it is
F40.8 identifies phobic anxiety disorders that do not fit a more specific ICD-10 category. Use it for a documented fear response that is clearly phobic but not otherwise classified.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include marked fear or avoidance tied to a specific situation or object, with anxiety that is disproportionate to the actual risk.
When to use this code
Use this code when the record states a phobic anxiety disorder and no more specific phobia is documented. It is appropriate when the clinician describes a phobic pattern but does not name a matching subtype.
Check documentation if the note uses vague terms such as “phobia” or “anxiety with avoidance.” You should code the documented condition only when the chart supports a phobic anxiety disorder.
Do not use for
Do not use F40.8 for generalized anxiety, panic disorder, or a specific phobia that has its own code. If the diagnosis is unclear, check documentation.
Coding tip
Look for a documented phobic anxiety disorder first, then confirm that no more specific ICD-10 code applies.