B81.1 — Intestinal capillariasis
B81.1 is a billable, specific ICD-10-CM code for intestinal capillariasis. It is valid for submission on a claim.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- hepatic capillariasis (B83.8)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Capillariasis NOS
- Infection due to Capillaria philippinensis
Other codes that can never be billed with B81.1
These codes carry an Excludes1 note pointing at B81.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B81.1 alone.
- B83Other helminthiases
Risk adjustment
B81.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How B81.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to B81.1.
- Capillariasis(intestinal)
- Infection, infected, infective›Capillaria(intestinal)
- Diarrhea, diarrheal›due to›Capillaria philippinensis
- Infection, infected, infective›Capillaria›philippinensis
- Infestation›Capillaria›philippinensis
- Infestation›helminth›intestinal›capillariasis
Related codes at this level
Codes that share B81. If B81.1 is not quite right, the correct code is usually one of these.
Questions about B81.1
- Is B81.1 a billable ICD-10-CM code?
- Yes. B81.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B81.1 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).