Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes A00-B99 – Certain infectious and parasitic diseases (A00-B99) > 2024 ICD-10-CM Codes A75-A79 – Rickettsioses (A75-A79) > 2024 ICD-10-CM Codes A77 – Spotted fever [tick-borne rickettsioses] (A77)