F40.9

Billable

Phobic anxiety disorder, unspecified

F40.9 is the ICD-10-CM code for Phobic anxiety disorder, unspecified. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
F01-F99
Parent
F40
Edition
FY2026

F01-F99 Mental, Behavioral and Neurodevelopmental disorders

What this means — in plain language

MedlinePlus · NIH

A phobia is a type of anxiety disorder . It is a strong, irrational fear of something that poses little or no real danger. There are many specific phobias. Acrophobia is a fear of heights. Agoraphobia is a fear of public places, and claustrophobia is a fear of closed-in places. If you become anxious and extremely self-conscious in everyday social situations, you could have a social phobia. Other common phobias…

Read more about Phobias at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • Phobia NOS
  • Phobic state NOS

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code F40.9?
F40.9 is the ICD-10-CM code for "Phobic anxiety disorder, unspecified". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
Is F40.9 a billable code?
Yes — F40.9 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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