F40.228Billable
Other natural environment type phobia
- Chapter
- 5. Mental, Behavioral and Neurodevelopmental disorders
- Category
- F40
- Effective date
- October 1, 2026
Related codes in category F40
F40Phobic anxiety disordersF40.0AgoraphobiaF40.00Agoraphobia, unspecifiedYesF40.01Agoraphobia with panic disorderYesF40.02Agoraphobia without panic disorderYesF40.1Social phobiasF40.10Social phobia, unspecifiedYesF40.11Social phobia, generalizedYesF40.2Specific (isolated) phobiasF40.21Animal type phobiaF40.210ArachnophobiaYesF40.218Other animal type phobiaYes
Frequently asked questions
What is ICD-10 code F40.228?
F40.228 is an ICD-10-CM diagnosis code for Other natural environment type phobia.
Is F40.228 a billable code?
Yes. F40.228 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is F40.228 in?
F40.228 falls under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.
When did F40.228 become effective?
F40.228 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to F40.228?
F40.228 belongs to category F40, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.