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B81 ICD-10-CA category: Other intestinal helminthiases, not elsewhere classified

B81 isn’t a code on its own. Choose one of the 6 codes beneath it, the one the documentation supports.

Official description

B81

Other intestinal helminthiases, not elsewhere classified

ICD-10-CA · Canada

Codes in B81

B81 isn’t a code on its own. Open the code that matches what the note documents.

B81.0AnisakiasisB81.1Intestinal capillariasisB81.2TrichostrongyliasisB81.3Intestinal angiostrongyliasisB81.4Mixed intestinal helminthiasesB81.8Other specified intestinal helminthiases

Notes for B81

As CIHI prints them, with any note B81 takes from the headings above it.

Includes

  • Diseases generally recognized as communicable or transmissibleFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Use additional code

Add a code for this detail when the note documents it.

  • Use additional code (U82-U84) to identify resistance to antimicrobial drugsFrom Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Excludes

Conditions classified elsewhere.

  • Angiostrongyliasis due to:• Angiostrongylus cantonensis (B83.2)• Parastrongylus cantonensis (B83.2)
  • Carrier or suspected carrier of infectious disease (Z22.-)certain localized infections - see body system-related chaptersinfectious and parasitic diseases:• complicating pregnancy, childbirth and the puerperium [except obstetrical tetanus] (O98.-)• specific to the perinatal period [except tetanus neonatorum, whooping cough, congenital syphilis, perinatal gonococcal infection and perinatal human immunodeficiency virus [HIV] disease] (P35-P39)influenza and other acute respiratory infections (J00-J22)From Chapter 1: Certain infectious and parasitic diseases (A00-B99)

Where B81 sits

  1. 1ChapterChapter 1: Certain infectious and parasitic diseases (A00-B99)
  2. 2Block B65-B83Helminthiases
  3. 3Category B81Other intestinal helminthiases, not elsewhere classified

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See B81 in the CIHI source

Frequently asked questions

Is B81 a valid ICD-10-CA code?

No. B81 (Other intestinal helminthiases, not elsewhere classified) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 6 codes; record the one the documentation supports.

Where is B81 in ICD-10-CA?

B81 sits under B65-B83 Helminthiases, within Chapter 1: Certain infectious and parasitic diseases (A00-B99).

What coding notes apply to B81?

ICD-10-CA lists Excludes, Includes, Use additional code notes for B81, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside B81

B65Schistosomiasis [bilharziasis]B66Other fluke infectionsB67EchinococcosisB68TaeniasisB69CysticercosisB70Diphyllobothriasis and sparganosisB71Other cestode infectionsB72DracunculiasisB73OnchocerciasisB74FilariasisB75TrichinellosisB76Hookworm diseasesB77AscariasisB78StrongyloidiasisB79TrichuriasisB80EnterobiasisB82Unspecified intestinal parasitismB83Other helminthiases