group of acute, arthropod borne infections caused by rickettsiae; includes epidemic (classic or louse-borne) typhus, its recrudescent form, and murine (endemic or flea-borne) typhus; all are characterized by severe headache, chills, high fever, stupor, and rash.
Also applicable to/known as
Typhus (fever) NOS
ICD-9-CM Volume 2 Index Entries That Refer To 081.9