Chapter I
Certain infectious and parasitic diseases
(A00-B99)

Rickettsioses
(A75-A79)

A75 Typhus fever
Excludes: rickettsiosis due to Ehrlichia sennetsu ( A79.8 )
A75.0 Epidemic louse-borne typhus fever due to Rickettsia prowazekii
Classical typhus (fever)
Epidemic (louse-borne) typhus
A75.1 Recrudescent typhus [Brill's disease]
Brill-Zinsser disease
A75.2 Typhus fever due to Rickettsia typhi
Murine (flea-borne) typhus
A75.3 Typhus fever due to Rickettsia tsutsugamushi
Scrub (mite-borne) typhus
Tsutsugamushi fever
A75.9 Typhus fever, unspecified
Typhus (fever) NOS

A77 Spotted fever [tick-borne rickettsioses]
A77.0 Spotted fever due to Rickettsia rickettsii
Rocky Mountain spotted fever
Sao Paulo fever
A77.1 Spotted fever due to Rickettsia conorii
African tick typhus
Boutonneuse fever
India tick typhus
Kenya tick typhus
Marseilles fever
Mediterranean tick fever
A77.2 Spotted fever due to Rickettsia sibirica
North Asian tick fever
Siberian tick typhus
A77.3 Spotted fever due to Rickettsia australis
Queensland tick typhus
A77.8 Other spotted fevers
A77.9 Spotted fever, unspecified
Tick-borne typhus NOS

A78 Q fever
Infection due to Coxiella burnetii
Nine Mile fever
Quadrilateral fever

A79 Other rickettsioses
A79.0 Trench fever
Quintan fever
Wolhynian fever
A79.1 Rickettsialpox due to Rickettsia akari
Kew Garden fever
Vesicular rickettsiosis
A79.8 Other specified rickettsioses
Rickettsiosis due to Ehrlichia sennetsu
A79.9 Rickettsiosis, unspecified
Rickettsial infection NOS