ICD-10-CM F40.220 is the diagnosis code for Fear of thunderstorms. This code falls under the section "Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders" within Chapter 5 — Mental, Behavioral and Neurodevelopmental disorders (F01-F99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where F40.220 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, F40.220 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
F40.220 is the ICD-10-CM diagnosis code for "Fear of thunderstorms". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of F40.220 is F40.22 ("Natural environment type phobia"). F40.220 provides a more specific classification within this category.
F40.220 is located in Section F40-F48 — "Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders" within Chapter 5 of the ICD-10-CM Tabular List.
Use F40.220 when the patients documented diagnosis matches "Fear of thunderstorms" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Fear of thunderstorms is F40.220.
Yes, F40.220 can be used as a primary diagnosis code since it is billable and specific.
F40.220 is in Chapter 5 of the ICD-10-CM Tabular List.
Yes, F40.220 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.