Alphabetic index · F
Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
R50.9default code
Sub-terms
abortusA23.1
Aden (dengue)A90
African tick biteA77.8
African tick-borneA68.1
American
aphthousB08.8
arbovirus, arboviralA94
Argentinian hemorrhagicA96.0
AssamB55.0
Australian QA78
Bangkok hemorrhagicA91
Barmah forestA92.8
BartonellaA44.0
bilious, hemoglobinuricB50.8
blackwaterB50.8
blisterB00.1
Bolivian hemorrhagicA96.1
Bonvale damT73.3
boutonneuseA77.1
brainsee Encephalitis
Brazilian purpuricA48.4
breakboneA90
BullisA77.0
BunyamweraA92.8
BurdwanB55.0
BwambaA92.8
Cameroonsee Malaria
CantonA75.9
catarrhal (acute)J00
chronicJ31.0
cat-scratchA28.1
Central Asian hemorrhagicA98.0
cerebralsee Encephalitis
cerebrospinal meningococcalA39.0
ChagresB50.9
ChandipuraA92.8
ChanguinolaA93.1
Charcot's (biliary) (hepatic) (intermittent)see Calculus, bile duct
Chikungunya (viral) (hemorrhagic)A92.0
ChitralA93.1
Colombosee Fever, paratyphoid
Colorado tick (virus)A93.2
congestive (remittent)see Malaria
Congo virusA98.0
continued malarialB50.9
Corsicansee Malaria
Crimean-Congo hemorrhagicA98.0
Cyprussee Brucellosis
dandyA90
deer flysee Tularemia
dengue (virus)A90
desertB38.0
drug inducedR50.2
due to
entericA01.00
enteroviral exanthematous (Boston exanthem)A88.0
ephemeral (of unknown origin)R50.9
epidemic hemorrhagicA98.5
erysipelatoussee Erysipelas
estivo-autumnal (malarial)B50.9
famineA75.0
five dayA79.0
following deliveryO86.4
Fort BraggA27.89
gastroentericA01.00
gastromalarialsee Malaria
Gibraltarsee Brucellosis
glandularsee Mononucleosis, infectious
Guama (viral)A92.8
HaverhillA25.1
hay (allergic)J30.1
with asthma (bronchial)J45.909
due to
heat (effects)T67.01
hematuric, biliousB50.8
hemoglobinuric (malarial) (bilious)B50.8
hemorrhagic (arthropod-borne) NOSA94
with renal syndromeA98.5
arenaviralA96.9
specified NECA96.8
ArgentinianA96.0
BangkokA91
BolivianA96.1
Central AsianA98.0
ChikungunyaA92.0
Crimean-CongoA98.0
dengue (virus)A91
epidemicA98.5
Junin (virus)A96.0
KoreanA98.5
Kyasanur forestA98.2
Machupo (virus)A96.1
mite-borneA93.8
mosquito-borneA92.8
OmskA98.1
PhilippineA91
RussianA98.5
SingaporeA91
Southeast AsiaA91
ThailandA91
tick-borne NECA93.8
viralA99
specified NECA98.8
hepaticsee Cholecystitis
herpeticsee Herpes
icterohemorrhagicA27.0
IndianaA93.8
infectiveB99.9
specified NECB99.8
intermittent (bilious)see also Malaria
iodideR50.2
Japanese riverA75.3
junglesee also Malaria
yellowA95.0
Junin (virus) hemorrhagicA96.0
KatayamaB65.2
kedaniA75.3
Kenya (tick)A77.1
Kew GardenA79.1
Korean hemorrhagicA98.5
LassaA96.2
Lone StarA77.0
Machupo (virus) hemorrhagicA96.1
malaria, malarialsee Malaria
MaltaA23.9
MarseillesA77.1
marshsee Malaria
Mayaro (viral)A92.8
meningealsee Meningitis
MeuseA79.0
MexicanA75.2
mianehA68.1
miasmaticsee Malaria
mosquito-borne (viral)A92.9
hemorrhagicA92.8
mountainsee also Brucellosis
Mucambo (viral)A92.8
mudA27.9
Neapolitansee Brucellosis
neutropenicD70.9
newbornP81.9
environmentalP81.0
Nine-MileA78
non-exanthematous tickA93.2
North Asian tick-borneA77.2
Omsk hemorrhagicA98.1
O'nyong-nyong (viral)A92.1
Oropouche (viral)A93.0
OroyaA44.0
pacific coast tickA77.8
paludalsee Malaria
Panama (malarial)B50.9
PappataciA93.1
paratyphoidA01.4
parrotA70
periodic (Mediterranean)M04.1
persistent (of unknown origin)R50.9
petechialA39.0
pharyngoconjunctivalB30.2
Philippine hemorrhagicA91
phlebotomusA93.1
Piry (virus)A93.8
Pixuna (viral)A92.8
Plasmodium ovaleB53.0
polioviral (nonparalytic)A80.4
PontiacA48.2
postimmunizationR50.83
postoperativeR50.82
due to infectionT81.40
posttransfusionR50.84
postvaccinationR50.83
presenting with conditions classified elsewhereR50.81
pretibialA27.89
puerperalO86.4
QA78
quadrilateralA78
quartan (malaria)B52.9
Queensland (coastal) (tick)A77.3
quintanA79.0
rabbitsee Tularemia
rat-biteA25.9
recurrentsee Fever, relapsing
relapsing (Borrelia)A68.9
Carter's (Asiatic)A68.1
Dutton's (West African)A68.1
Koch'sA68.9
louse-borneA68.0
Novy's
Obermeyer's (European)A68.0
tick-borneA68.1
remittent (bilious) (congestive) (gastric)see Malaria
rheumatic (active) (acute) (chronic) (subacute)I00
with central nervous system involvementI02.9
inactive or quiescent with
cardiac hypertrophyI09.89
carditisI09.9
endocarditisI09.1
aortic (valve)I06.9
with mitral (valve) diseaseI08.0
mitral (valve)I05.9
with aortic (valve) diseaseI08.0
pulmonary (valve)I09.89
tricuspid (valve)I07.8
heart disease NECI09.89
heart failure (congestive) (conditions in category I50.)I09.81
left ventricular failure (conditions in I50.1-I50.4-)I09.81
myocarditis, myocardial degeneration (conditions in I51.4)I09.0
pancarditisI09.9
pericarditisI09.2
Rift Valley (viral)A92.4
Rocky Mountain spottedA77.0
roseJ30.1
Ross RiverB33.1
Russian hemorrhagicA98.5
San Joaquin (Valley)B38.0
sandflyA93.1
Sao PauloA77.0
scarletA38.9
seven day (leptospirosis) (autumnal) (Japanese)A27.89
dengueA90
shin-boneA79.0
Singapore hemorrhagicA91
solarA90
SongoA98.5
soreB00.1
South African tick-biteA68.1
Southeast Asia hemorrhagicA91
spinalsee Meningitis
spirillaryA25.0
splenicsee Anthrax
spottedA77.9
AmericanA77.0
BrazilianA77.0
cerebrospinal meningitisA39.0
ColombianA77.0
due to Rickettsia
africae (African tick bite fever)A77.8
australisA77.3
conoriiA77.1
parkeriA77.8
rickettsiiA77.0
sibiricaA77.2
specified type NECA77.8
EhrlichiosisA77.40
Rocky MountainA77.0
steroidR50.2
streptobacillaryA25.1
subtertianB50.9
Sumatran miteA75.3
sunA90
swampA27.9
swineA02.8
sylvatic, yellowA95.0
TahynaB33.8
tertiansee Malaria, tertian
Thailand hemorrhagicA91
thermicT67.01
three-dayA93.1
tick
American mountainA93.2
ColoradoA93.2
KemerovoA93.8
MediterraneanA77.1
mountainA93.2
nonexanthematousA93.2
QuaranfilA93.8
tick-bite NECA93.8
tick-borne (hemorrhagic) NECA93.8
trenchA79.0
tsutsugamushiA75.3
typhogastricA01.00
typhoid (abortive) (hemorrhagic) (intermittent) (malignant)A01.00
complicated by
typhomalarialsee Malaria
typhussee Typhus (fever)
undulantsee Brucellosis
unknown originR50.9
uveoparotidD86.89
valleyB38.0
Venezuelan equineA92.2
vesicular stomatitisA93.8
viral hemorrhagicsee Fever, hemorrhagic, by type of virus
VolhynianA79.0
Wesselsbron (viral)A92.8
West
Whitmore'ssee Melioidosis
WolhynianA79.0
wormB83.9
yellowA95.9
Zika virusA92.5
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