ICD-10 Code for Infestation

The default ICD-10-CM 2027 code for infestation is B88.9 – Infestation, unspecified. More specific codes depend on the details documented, as listed in the official index (81 codes, 81 billable).

Main code: B88.9 – Infestation, unspecified
Billable: Yes

Index entries for Infestation

Acanthocheilonema (perstans) (streptocerca) – B74.4
Acariasis – B88.09
- demodex folliculorum – B88.01
- sarcoptes scabiei – B86
- trombiculae – B88.09
Agamofilaria streptocerca – B74.4
Ancylostoma, ankylostoma (braziliense) (caninum) (ceylanicum) (duodenale) – B76.0
- americanum – B76.1
- new world – B76.1
Anisakis larvae, anisakiasis – B81.0
arthropod NEC – B88.2
Ascaris lumbricoides – see Ascariasis
Balantidium coli – A07.0
beef tapeworm – B68.1
Bothriocephalus (latus) – B70.0
- larval – B70.1
broad tapeworm – B70.0
- larval – B70.1
Brugia (malayi) – B74.1
- timori – B74.2
candiru – B88.8
Capillaria
- hepatica – B83.8
- philippinensis – B81.1
cat liver fluke – B66.0
cestodes – B71.9
- diphyllobothrium – see Infestation, diphyllobothrium
- dipylidiasis – B71.1
- hymenolepiasis – B71.0
- specified type NEC – B71.8
chigger – B88.09
chigo, chigoe – B88.1
Clonorchis (sinensis) (liver) – B66.1
coccidial – A07.3
crab-lice – B85.3
Cysticercus cellulosae – see Cysticercosis
Demodex (brevis) (folliculorum) – B88.01
Dermanyssus gallinae – B88.09
Dermatobia (hominis) – see Myiasis
Dibothriocephalus (latus) – B70.0
- larval – B70.1
Dicrocoelium dendriticum – B66.2
Diphyllobothrium (adult) (latum) (intestinal) (pacificum) – B70.0
- larval – B70.1
Diplogonoporus (grandis) – B71.8
Dipylidium caninum – B67.4
Distoma hepaticum – B66.3
dog tapeworm – B67.4
Dracunculus medinensis – B72
dragon worm – B72
dwarf tapeworm – B71.0
Echinococcus – see Echinococcus
Echinostomum ilocanum – B66.8
Entamoeba (histolytica) – see Infection, Ameba
Enterobius vermicularis – B80
eyelid
- in (due to)
  - leishmaniasis – B55.1
  - loiasis – B74.3
  - onchocerciasis – B73.09
  - phthiriasis – B85.3
- parasitic NOS – B89
eyeworm – B74.3
Fasciola (gigantica) (hepatica) (indica) – B66.3
Fasciolopsis (buski) (intestine) – B66.5
filarial – B74.9
- bancroftian – B74.0
- conjunctiva – B74.9
- due to
  - Acanthocheilonema (perstans) (streptocerca) – B74.4
  - Brugia (malayi) – B74.1
    - timori – B74.2
  - Dracunculus medinensis – B72
  - guinea worm – B72
  - loa loa – B74.3
  - Mansonella (ozzardi) (perstans) (streptocerca) – B74.4
  - Onchocerca volvulus – B73.00
    - eye – B73.00
    - eyelid – B73.09
  - Wuchereria (bancrofti) – B74.0
- Malayan – B74.1
- ozzardi – B74.4
- specified type NEC – B74.8
fish tapeworm – B70.0
- larval – B70.1
fluke – B66.9
- blood NOS – see Schistosomiasis
- cat liver – B66.0
- intestinal – B66.5
- liver (sheep) – B66.3
  - cat – B66.0
  - Chinese – B66.1
  - due to clonorchiasis – B66.1
  - oriental – B66.1
- lancet – B66.2
- lung (oriental) – B66.4
- sheep liver – B66.3
- specified type NEC – B66.8
fly larvae – see Myiasis
Gasterophilus (intestinalis) – see Myiasis
Gastrodiscoides hominis – B66.8
Giardia lamblia – A07.1
Gnathostoma (spinigerum) – B83.1
Gongylonema – B83.8
guinea worm – B72
helminth – B83.9
- angiostrongyliasis – B83.2
  - intestinal – B81.3
- gnathostomiasis – B83.1
- hirudiniasis, internal – B83.4
- intestinal – B82.0
  - angiostrongyliasis – B81.3
  - anisakiasis – B81.0
  - ascariasis – see Ascariasis
  - capillariasis – B81.1
  - cysticercosis – see Cysticercosis
  - diphyllobothriasis – see Infestation, diphyllobothriasis
  - dracunculiasis – B72
  - echinococcus – see Echinococcosis
  - enterobiasis – B80
  - filariasis – see Infestation, filarial
  - fluke – see Infestation, fluke
  - hookworm – see Infestation, hookworm
  - mixed (types classifiable to more than one of the titles B65.0-B81.3 and B81.8) – B81.4
  - onchocerciasis – see Onchocerciasis
  - schistosomiasis – see Infestation, schistosoma
  - specified
    - cestode NEC – see Infestation, cestode
    - type NEC – B81.8
  - strongyloidiasis – see Strongyloidiasis
  - taenia – see Infestation, taenia
  - trichinellosis – B75
  - trichostrongyliasis – B81.2
  - trichuriasis – B79
- specified type NEC – B83.8
- syngamiasis – B83.3
- visceral larva migrans – B83.0
Heterophyes (heterophyes) – B66.8
hookworm – B76.9
- ancylostomiasis – B76.0
- necatoriasis – B76.1
- specified type NEC – B76.8
Hymenolepis (diminuta) (nana) – B71.0
intestinal NEC – B82.9
leeches (aquatic) (land) – see Hirudiniasis
Leishmania – see Leishmaniasis
lice, louse – see Infestation, Pediculus
Linguatula – B88.8
Liponyssoides sanguineus – B88.09
Loa loa – B74.3
- conjunctival – B74.3
- eyelid – B74.3
louse – see Infestation, Pediculus
maggots – see Myiasis
Mansonella (ozzardi) (perstans) (streptocerca) – B74.4
Medina (worm) – B72
Metagonimus (yokogawai) – B66.8
microfilaria streptocerca – see Onchocerciasis
- eye – B73.00
- eyelid – B73.09
mites – B88.9
- Demodex – B88.01
- scabic – B86
Monilia (albicans) – see Candidiasis
mouth – B37.0
Necator americanus – B76.1
nematode NEC (intestinal) – B82.0
- Ancylostoma – B76.0
- conjunctiva NEC – B83.9
- Enterobius vermicularis – B80
- Gnathostoma spinigerum – B83.1
- physaloptera – B80
- specified NEC – B81.8
- trichostrongylus – B81.2
- trichuris (trichuria) – B79
Oesophagostomum (apiostomum) – B81.8
Oestrus ovis – B87.9 – see also Myiasis
Onchocerca (volvulus) – see Onchocerciasis
Opisthorchis (felineus) (viverrini) – B66.0
orbit, parasitic NOS – B89
Oxyuris vermicularis – B80
Paragonimus (westermani) – B66.4
parasite, parasitic – B89
- eyelid – B89
- intestinal NOS – B82.9
- mouth – B37.0
- skin – B88.9
- tongue – B37.0
Parastrongylus
- cantonensis – B83.2
- costaricensis – B81.3
Pediculus – B85.2
- body – B85.1
- capitis (humanus) (any site) – B85.0
- corporis (humanus) (any site) – B85.1
- head – B85.0
- mixed (classifiable to more than one of the titles B85.0-B85.3) – B85.4
- pubis (any site) – B85.3
Pentastoma – B88.8
pest – Z59.19
Phthirus (pubis) (any site) – B85.3
- with any infestation classifiable to B85.0-B85.2 B85.4
pinworm – B80
pork tapeworm (adult) – B68.0
protozoal NEC – B64
- intestinal – A07.9
  - specified NEC – A07.8
- specified NEC – B60.8
pubic, louse – B85.3
rat tapeworm – B71.0
red bug – B88.09
roundworm (large) – B82.0
- Ascariasis – B77.9 – see also Ascariasis
sandflea – B88.1
Sarcoptes scabiei – B86
scabies – B86
Schistosoma – B65.9
- bovis – B65.8
- cercariae – B65.3
- haematobium – B65.0
- intercalatum – B65.8
- japonicum – B65.2
- mansoni – B65.1
- mattheei – B65.8
- mekongi – B65.8
- specified type NEC – B65.8
- spindale – B65.8
screw worms – see Myiasis
skin NOS – B88.9
Sparganum (mansoni) (proliferum) (baxteri) – B70.1
- larval – B70.1
specified type NEC – B88.8
Spirometra larvae – B70.1
Stellantchasmus falcatus – B66.8
Strongyloides stercoralis – see Strongyloidiasis
Taenia – B68.9
- diminuta – B71.0
- echinococcus – see Echinococcus
- mediocanellata – B68.1
- nana – B71.0
- saginata – B68.1
- solium (intestinal form) – B68.0
  - larval form – see Cysticercosis
Taeniarhynchus saginatus – B68.1
tapeworm – B71.9
- beef – B68.1
- broad – B70.0
  - larval – B70.1
- dog – B67.4
- dwarf – B71.0
- fish – B70.0
  - larval – B70.1
- pork – B68.0
- rat – B71.0
Ternidens diminutus – B81.8
Tetranychus molestissimus – B88.09
threadworm – B80
tongue – B37.0
Toxocara (canis) (cati) (felis) – B83.0
trematode (s) – see Infestation, fluke
Trichinella (spiralis) – B75
Trichocephalus – B79
Trichomonas – see Trichomoniasis
Trichostrongylus – B81.2
Trichuris (trichiura) – B79
Trombicula (irritans) – B88.09
Tunga penetrans – B88.1
Uncinaria americana – B76.1
Vandellia cirrhosa – B88.8
whipworm – B79
worms – B83.9
- intestinal – B82.0
Wuchereria (bancrofti) – B74.0

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.