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FY2027

ICD-10 Code for Infestation

The ICD-10-CM code for infestation is B88.9Infestation, unspecified. This is the code the Alphabetic Index gives for infestation with no further qualifier, valid for FY2027 (October 1, 2026September 30, 2027).

BillableUnspecified

B88.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.

Which infestation code should you use?

The Alphabetic Index lists 81 codes under Infestation. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

AcanthocheilonemaB74.4Mansonelliasis
AcariasisB88.09Other acariasis
Agamofilaria streptocercaB74.4Mansonelliasis
Ancylostoma, ankylostomaB76.0Ancylostomiasis
Anisakis larvae, anisakiasisB81.0Anisakiasis
arthropod NECB88.2Other arthropod infestations
Balantidium coliA07.0Balantidiasis
beef tapewormB68.1Taenia saginata taeniasis
BothriocephalusB70.0Diphyllobothriasis
broad tapewormB70.0Diphyllobothriasis
BrugiaB74.1Filariasis due to Brugia malayi
candiruB88.8Other specified infestations
cat liver flukeB66.0Opisthorchiasis
cestodesB71.9Cestode infection, unspecified
chiggerB88.09Other acariasis
chigo, chigoeB88.1Tungiasis [sandflea infestation]
ClonorchisB66.1Clonorchiasis
coccidialA07.3Isosporiasis
crab-liceB85.3Phthiriasis
DemodexB88.01Infestation by Demodex mites
Dermanyssus gallinaeB88.09Other acariasis
DibothriocephalusB70.0Diphyllobothriasis
Dicrocoelium dendriticumB66.2Dicroceliasis
DiphyllobothriumB70.0Diphyllobothriasis
DiplogonoporusB71.8Other specified cestode infections
Dipylidium caninumB67.4Echinococcus granulosus infection, unspecified
Distoma hepaticumB66.3Fascioliasis
dog tapewormB67.4Echinococcus granulosus infection, unspecified
Dracunculus medinensisB72Dracunculiasis
dragon wormB72Dracunculiasis
dwarf tapewormB71.0Hymenolepiasis
Echinostomum ilocanumB66.8Other specified fluke infections
Enterobius vermicularisB80Enterobiasis
eyewormB74.3Loiasis
FasciolaB66.3Fascioliasis
FasciolopsisB66.5Fasciolopsiasis
filarialB74.9Filariasis, unspecified
fish tapewormB70.0Diphyllobothriasis
flukeB66.9Fluke infection, unspecified
Gastrodiscoides hominisB66.8Other specified fluke infections
Giardia lambliaA07.1Giardiasis [lambliasis]
GnathostomaB83.1Gnathostomiasis
GongylonemaB83.8Other specified helminthiases
guinea wormB72Dracunculiasis
helminthB83.9Helminthiasis, unspecified
HeterophyesB66.8Other specified fluke infections
hookwormB76.9Hookworm disease, unspecified
HymenolepisB71.0Hymenolepiasis
intestinal NECB82.9Intestinal parasitism, unspecified
LinguatulaB88.8Other specified infestations
Liponyssoides sanguineusB88.09Other acariasis
Loa loaB74.3Loiasis
MansonellaB74.4Mansonelliasis
MedinaB72Dracunculiasis
MetagonimusB66.8Other specified fluke infections
mitesB88.9Infestation, unspecified
mouthB37.0Candidal stomatitis
Necator americanusB76.1Necatoriasis
nematode NECB82.0Intestinal helminthiasis, unspecified
OesophagostomumB81.8Other specified intestinal helminthiases
Oestrus ovisB87.9Myiasis, unspecified
OpisthorchisB66.0Opisthorchiasis
orbit, parasitic NOSB89Unspecified parasitic disease
Oxyuris vermicularisB80Enterobiasis
ParagonimusB66.4Paragonimiasis
parasite, parasiticB89Unspecified parasitic disease
PediculusB85.2Pediculosis, unspecified
PentastomaB88.8Other specified infestations
pestZ59.19Other inadequate housing
PhthirusB85.3Phthiriasis
pinwormB80Enterobiasis
pork tapewormB68.0Taenia solium taeniasis
protozoal NECB64Unspecified protozoal disease
pubic, louseB85.3Phthiriasis
rat tapewormB71.0Hymenolepiasis
red bugB88.09Other acariasis
roundwormNECB82.0Intestinal helminthiasis, unspecified
sandfleaB88.1Tungiasis [sandflea infestation]
Sarcoptes scabieiB86Scabies
scabiesB86Scabies
SchistosomaB65.9Schistosomiasis, unspecified
skin NOSB88.9Infestation, unspecified
SparganumB70.1Sparganosis
specified type NECB88.8Other specified infestations
Spirometra larvaeB70.1Sparganosis
Stellantchasmus falcatusB66.8Other specified fluke infections
TaeniaB68.9Taeniasis, unspecified
Taeniarhynchus saginatusB68.1Taenia saginata taeniasis
tapewormB71.9Cestode infection, unspecified
Ternidens diminutusB81.8Other specified intestinal helminthiases
Tetranychus molestissimusB88.09Other acariasis
threadwormB80Enterobiasis
tongueB37.0Candidal stomatitis
ToxocaraB83.0Visceral larva migrans
TrichinellaB75Trichinellosis
TrichocephalusB79Trichuriasis
TrichostrongylusB81.2Trichostrongyliasis
TrichurisB79Trichuriasis
TrombiculaB88.09Other acariasis
Tunga penetransB88.1Tungiasis [sandflea infestation]
Uncinaria americanaB76.1Necatoriasis
Vandellia cirrhosaB88.8Other specified infestations
whipwormB79Trichuriasis
wormsB83.9Helminthiasis, unspecified
WuchereriaB74.0Filariasis due to Wuchereria bancrofti

Infestation Acariasis

demodex folliculorumB88.01Infestation by Demodex mites
sarcoptes scabieiB86Scabies
trombiculaeB88.09Other acariasis

Infestation Ancylostoma, ankylostoma

americanumB76.1Necatoriasis
new worldB76.1Necatoriasis

Infestation Bothriocephalus

larvalB70.1Sparganosis

Infestation broad tapeworm

larvalB70.1Sparganosis

Infestation Brugia

timoriB74.2Filariasis due to Brugia timori

Infestation Capillaria

hepaticaB83.8Other specified helminthiases
philippinensisB81.1Intestinal capillariasis

Infestation cestodes

dipylidiasisB71.1Dipylidiasis
hymenolepiasisB71.0Hymenolepiasis
specified type NECB71.8Other specified cestode infections

Infestation Dibothriocephalus

larvalB70.1Sparganosis

Infestation Diphyllobothrium

larvalB70.1Sparganosis

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources