---
title: "ICD-10-CM F40.9: Phobic anxiety disorder, unspecified | BillingBrief"
description: "ICD-10-CM code F40.9: Phobic anxiety disorder, unspecified. Category, related codes, and the official source, in plain English."
canonical: "https://billingbrief.com/icd10/f40.9/"
language: "en"
---

# F40.9 Phobic anxiety disorder, unspecified

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Phobic anxiety disorder, unspecified

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Also covers

-   Phobia NOS
-   Phobic state NOS

## Related codes

-   [`F40.241` Acrophobia ICD-10-CM](https://billingbrief.com/icd10/f40.241/)
-   [`F40.242` Fear of bridges ICD-10-CM](https://billingbrief.com/icd10/f40.242/)
-   [`F40.243` Fear of flying ICD-10-CM](https://billingbrief.com/icd10/f40.243/)
-   [`F40.248` Other situational type phobia ICD-10-CM](https://billingbrief.com/icd10/f40.248/)
-   [`F40.290` Androphobia ICD-10-CM](https://billingbrief.com/icd10/f40.290/)
-   [`F40.291` Gynephobia ICD-10-CM](https://billingbrief.com/icd10/f40.291/)
-   [`F40.298` Other specified phobia ICD-10-CM](https://billingbrief.com/icd10/f40.298/)
-   [`F40.8` Other phobic anxiety disorders ICD-10-CM](https://billingbrief.com/icd10/f40.8/)

## Common questions

### Is F40.9 a billable code?

Yes. F40.9 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

F40 Phobic anxiety disorders

Chapter

Mental, behavioral and neurodevelopmental disorders

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).