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ICD-10-CM/Certain infectious and parasitic diseases

A75-A79

Rickettsioses (A75-A79)

A75-A79 contains 4 categories and 26 ICD-10-CM codes for FY2027.

A75Typhus fever5 billable
A77Spotted fever [tick-borne rickettsioses]9 billable
A78Q fever1 billable
A79Other rickettsioses6 billable

Every ICD-10-CM code, and whether you can actually bill it

Built directly from the official ICD-10-CM FY2027 release published by the CDC / National Center for Health Statistics and CMS.

FY2027 codes are valid for encounters from October 1, 2026 through September 30, 2027.

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Billable vs Non-Billable ICD-10 Codes Explained
Excludes1 vs Excludes2 in ICD-10-CM: The Difference
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