2026 ICD-10-CM Diagnosis Code F40Phobic anxiety disorders

ICD-10-CM Codes›F01–F99›F40-F48›F40

ICD-10-CM F40
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F40 is a non-billable ICD-10-CM category code for phobic anxiety disorders, so it cannot be submitted on claims. Use a more specific code from this category instead, such as F40.00, F40.01, F40.02, and F40.10.

Code Identity

ICD-10-CM Code
F40
Billable Status
No — Non-Billable Category
Code Describes
Phobic anxiety disorders
Short Description
Phobic anxiety disorders
Same as the full description in the CMS dataset.
Chapter
F40-F48
Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF40-F48Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
CategoryF40Phobic anxiety disorders
This CodeF40Phobic anxiety disorders

Specific Coding for Phobic anxiety disordersOverview

Non-specific codes like F40 require more characters. Use one of these billable codes instead:

  • F40.0 for Agoraphobia

  • Use F40.00 for Agoraphobia, unspecified

  • Use F40.01 for Agoraphobia with panic disorder

  • Use F40.02 for Agoraphobia without panic disorder

  • F40.1 for Social phobias

  • Use F40.10 for Social phobia, unspecified

  • Use F40.11 for Social phobia, generalized

  • F40.2 for Specific (isolated) phobias

  • F40.21 for Animal type phobia

  • F40.22 for Natural environment type phobia

  • F40.23 for Blood, injection, injury type phobia

  • F40.24 for Situational type phobia

  • F40.29 for Other specified phobia

  • Use F40.8 for Other phobic anxiety disorders

  • Use F40.9 for Phobic anxiety disorder, unspecified

Patient EducationClinical

Phobias

A phobia is a type of anxiety disorder. It is a strong, irrational fear of something that poses little or no real danger.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F40Overview

Is F40 (Phobic anxiety disorders) a billable code?

No. This is a category header that groups the codes for phobic anxiety disorders, and headers cannot be submitted on claims. Claims for phobic anxiety disorders need a more specific code from this category, such as F40.00, F40.01, and F40.02.