ICD-10 Code F40.218 – Other animal type phobia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F40.218 – Other animal type phobia
What it is
F40.218 identifies a specific phobia centered on animals not named elsewhere in the code set. Use it when fear, anxiety, or avoidance is tied to a particular animal type and is clinically significant.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see marked fear, immediate anxiety, or avoidance when the person encounters or anticipates the animal, with distress greater than expected for the situation.
When to use this code
Use this code when the record documents a phobic reaction to an animal type that is not covered by a more specific phobia code. It fits outpatient, behavioral health, or primary care notes when the clinician identifies the animal trigger clearly. Check documentation if the animal is not specified or if the fear is part of a broader anxiety disorder.
Do not use for
Do not use it for generalized anxiety, simple dislike, or a temporary fear without a documented phobia. If the record names a different specific phobia, code that condition instead.
Coding tip
Code the most specific animal-related phobia documented, and confirm that the trigger is an animal rather than a separate anxiety presentation.