F40.9
✓ Billable
Phobic anxiety disorder, unspecified
ICD-10-CM · FY2026 · Mental, Behavioral and Neurodevelopmental Disorders
Code
F40.9
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Mental, Behavioral and Neurodevelopmental Disorders
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code F40.9?
ICD-10-CM code F40.9 represents Phobic anxiety disorder, unspecified. It is a billable diagnosis code in the Mental, Behavioral and Neurodevelopmental Disorders chapter, effective October 1, 2025 – September 30, 2026.
Is F40.9 billable?
Yes. F40.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is F40.9 in?
F40.9 belongs to the Mental, Behavioral and Neurodevelopmental Disorders chapter (F01–F99) of ICD-10-CM.
Related codes in the F40 category
F40
Phobic anxiety disorders
Non-billable
F40.0
Agoraphobia
Non-billable
F40.1
Social phobias
Non-billable
F40.2
Specific (isolated) phobias
Non-billable
F40.8
Other phobic anxiety disorders
Billable
F40.00
Agoraphobia, unspecified
Billable
F40.01
Agoraphobia with panic disorder
Billable
F40.02
Agoraphobia without panic disorder
Billable
Search all 98,186 ICD-10-CM codes instantly
Search ICDwise →