A37.9
⚠ Non-billable (Header)Whooping cough, unspecified species
Certain infectious and parasitic diseases (A00-B99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
Child Codes (2)
Clinical Description
ICD-10-CM code A37.9 represents whooping cough, unspecified species. This code falls under the Certain infectious and parasitic diseases (A00-B99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 5-character code at the 4th level of specificity. There are 2 more specific child codes under A37.9.
Frequently Asked Questions
What is ICD-10 code A37.9?
ICD-10-CM code A37.9 is "Whooping cough, unspecified species". It belongs to the category: Certain infectious and parasitic diseases (A00-B99).
Is A37.9 a billable ICD-10 code?
No, A37.9 is a non-billable header code. A more specific child code must be used for billing.
Related Codes in A37
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)