ICD-10 Code F40.2 – Specific (isolated) phobias (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F40.2 – Specific (isolated) phobias
What it is
F40.2 identifies specific, isolated phobias: marked fear or anxiety tied to a particular object or situation. The fear is out of proportion to the actual danger and leads to avoidance or intense distress.
Clinical signs
Common features include immediate anxiety when exposed to the trigger, active avoidance, and distress that interferes with daily activities. Clinical features vary; refer to documentation.
When to use this code
Use F40.2 when the record clearly documents a specific phobia, such as fear of flying, heights, animals, or needles. Code it when the clinician describes persistent, situation-linked fear with avoidance or significant distress. Check documentation if the trigger is not clearly named.
Do not use for
Do not use this code for generalized anxiety, panic disorder, or agoraphobia unless the documentation specifically supports a specific phobia. Avoid using it for normal caution or temporary fear.
Coding tip
Code the named phobic trigger exactly as documented, and verify that the fear is isolated to that trigger.