2026 ICD-10-CM Diagnosis Code F40.00Agoraphobia, unspecified

ICD-10-CM Codes›F01–F99›F40-F48›F40

ICD-10-CM F40.00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F40.00 is a billable ICD-10-CM diagnosis code for agoraphobia, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as agoraphobia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Anxiety and fear-related disorders.

Code Identity

ICD-10-CM Code
F40.00
Billable Status
Yes — Valid for Submission
Code Describes
Agoraphobia, unspecified
Short Description
Agoraphobia, unspecified
Same as the full description in the CMS dataset.
Parent Code
F40.0
Agoraphobia

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF40-F48Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders
CategoryF40Phobic anxiety disorders
This CodeF40.00Agoraphobia, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Agoraphobia
  • Fear of going out
  • Fear of open spaces

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Agoraphobia

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD005
Anxiety and fear-related disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Agoraphobia

    obsessive, persistent, intense fear of places or situations from which escape might be difficult or embarrassing.

  • Agoraphobia

    an anxiety disorder characterized by an intense, irrational fear of venturing out into open places or situations in which help (or escape) might not be available should excessive anxiety or panic symptoms develop.

  • Agoraphobia without a History of Panic Disorder

    an anxiety disorder characterized by agoraphobia in the absence of a history of panic attacks; the individual fears incapacitation or humiliation in open, public places or situations due to panic-like symptoms rather than a full-blown panic attack.

  • Panic Disorder with Agoraphobia

    a disorder in which an individual experiences recurrent, unexpected panic attacks and persistent concern about having additional panic attacks. agoraphobia is a component of this disorder.

  • Panic Disorder without Agoraphobia

    a disorder in which an individual experiences recurrent, unexpected panic attacks and persistent concern about having additional panic attacks. agoraphobia is not a component of this disorder.

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.

Convert F40.00 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
300.22 Agoraphobia w/o panic
Approximate The match is approximate rather than exact.

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 F40.00Overview

Is F40.00 (Agoraphobia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report agoraphobia, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of F40.00?

Under the General Equivalence Mappings, agoraphobia, unspecified converts to ICD-9-CM 300.22 (agoraphobia w/o panic). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.