ICD-10-CM > A00-B99 > A75-A79 > A79 A79 Other rickettsioses Non-Billable/Non-Specific Codes A79.0Trench feverA79.1Rickettsialpox due to Rickettsia akariA79.8Other specified rickettsiosesA79.81Rickettsiosis due to Ehrlichia sennetsuA79.82Anaplasmosis [A. phagocytophilum]A79.89Other specified rickettsiosesA79.9Rickettsiosis, unspecified