F40.228 Other natural environment type phobia
ICD-10-CM · CMS code reference
F40.228 is for a natural environment type phobia other than a fear of thunderstorms, which is coded to F40.220.
Coding notes
From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.
Excludes2
Not part of this code, but both can be coded when both are documented.
- dysmorphophobia (nondelusional) (F45.22)
- nosophobia (F45.22)
Related codes
F40.210Arachnophobia ICD-10-CMF40.218Other animal type phobia ICD-10-CMF40.220Fear of thunderstorms ICD-10-CMF40.230Fear of blood ICD-10-CMF40.231Fear of injections and transfusions ICD-10-CMF40.232Fear of other medical care ICD-10-CMF40.233Fear of injury ICD-10-CMF40.240Claustrophobia ICD-10-CM
Common questions
Is F40.228 a billable code?
Yes. F40.228 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.