ICD-10-CM > A00-B99 > A75-A79 > A75 A75 Typhus fever Non-Billable/Non-Specific Type 1 Excludes rickettsiosis due to Ehrlichia sennetsu (A79.81) Codes A75.0Epidemic louse-borne typhus fever due to Rickettsia prowazekiiA75.1Recrudescent typhus [Brill's disease]A75.2Typhus fever due to Rickettsia typhiA75.3Typhus fever due to Rickettsia tsutsugamushiA75.9Typhus fever, unspecified