ICD-10 Code F40.00 – Agoraphobia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F40.00 – Agoraphobia, unspecified
What it is
F40.00 identifies agoraphobia when the record does not specify the subtype. Use it for fear or avoidance of situations where escape may feel difficult or help may be unavailable.
Clinical signs
Common features include marked fear, anxiety, or avoidance of public places, crowds, open spaces, or travel. Clinical features vary; refer to documentation.
When to use this code
Use F40.00 when the provider documents agoraphobia but does not name panic disorder, severity, or another specified form. It also fits when the chart simply states “agoraphobia” without further detail. Check documentation if the note suggests another anxiety disorder.
Do not use for
Do not use this code for panic disorder without agoraphobia, other specified phobic anxiety disorders, or generalized anxiety. Do not assume agoraphobia from vague anxiety symptoms alone.
Coding tip
If the diagnosis is nonspecific, code F40.00 and query only when the record may support a more specific anxiety diagnosis.