ICD-10 Code F40.0 – Agoraphobia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F40.0 – Agoraphobia
What it is
F40.0 identifies agoraphobia, an anxiety disorder marked by fear of situations where escape may be difficult or help unavailable. You use it when the chart documents persistent avoidance or distress tied to those situations.
Clinical signs
Patients may avoid public transportation, open spaces, enclosed places, crowds, or being outside the home alone. Clinical features vary; refer to documentation, and confirm that the fear is disproportionate and causes functional impairment.
When to use this code
Use F40.0 when the provider specifically diagnoses agoraphobia and documents the feared situations or avoidance pattern. It also fits when the record shows panic-like distress in multiple settings, but the diagnosis remains agoraphobia. If the note is unclear, check documentation.
Do not use for
Do not assign this code for simple shyness, situational nervousness, or general anxiety without agoraphobic avoidance. Do not use it when the chart supports another primary anxiety disorder instead.
Coding tip
Code F40.0 only when the provider links the symptoms to agoraphobia, not just to fear of travel, crowds, or leaving home.