F40.220

ICD-10Billable

Fear of thunderstorms

Official ICD-10-CM descriptor (FY2026)

Fear of thunderstorms

F40.220 is valid for submission on a claim — CMS flags it as a billable, specific code.

Related codes in F4022

F40.228Other natural environment type phobia

Where this code sits

Chapter: 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
Block: Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)
Parent code: F40.22

Krasyn AI Coder

Get code suggestions automatically as you type notes. Free for 50 analyses.

Install for Chrome — free

Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.