---
title: "ICD-10-CM F40.220: Fear of thunderstorms | BillingBrief"
description: "F40.220 is a fear of thunderstorms, one of the natural environment type phobias. Other natural environment phobias go to F40.228."
canonical: "https://billingbrief.com/icd10/f40.220/"
language: "en"
---

# F40.220 Fear of thunderstorms

ICD-10-CM · [CMS code reference](#source)

F40.220 is a fear of thunderstorms, one of the natural environment type phobias. Other natural environment phobias go to F40.228.

## 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

-   [`F40.210` Arachnophobia ICD-10-CM](https://billingbrief.com/icd10/f40.210/)
-   [`F40.218` Other animal type phobia ICD-10-CM](https://billingbrief.com/icd10/f40.218/)
-   [`F40.228` Other natural environment type phobia ICD-10-CM](https://billingbrief.com/icd10/f40.228/)
-   [`F40.230` Fear of blood ICD-10-CM](https://billingbrief.com/icd10/f40.230/)
-   [`F40.231` Fear of injections and transfusions ICD-10-CM](https://billingbrief.com/icd10/f40.231/)
-   [`F40.232` Fear of other medical care ICD-10-CM](https://billingbrief.com/icd10/f40.232/)
-   [`F40.233` Fear of injury ICD-10-CM](https://billingbrief.com/icd10/f40.233/)
-   [`F40.240` Claustrophobia ICD-10-CM](https://billingbrief.com/icd10/f40.240/)

## Common questions

### Is F40.220 a billable code?

Yes. F40.220 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

F40 Phobic anxiety disorders

Chapter

Mental, behavioral and neurodevelopmental disorders

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).