B81Header code — not billable

Other intestinal helminthiases, not elsewhere classified

Chapter
1. Certain infectious and parasitic diseases
Category
B81
Effective date
October 1, 2026

Related codes in category B81

B81.0AnisakiasisYesB81.1Intestinal capillariasisYesB81.2TrichostrongyliasisYesB81.3Intestinal angiostrongyliasisYesB81.4Mixed intestinal helminthiasesYesB81.8Other specified intestinal helminthiasesYes

Frequently asked questions

What is ICD-10 code B81?

B81 is an ICD-10-CM diagnosis code for Other intestinal helminthiases, not elsewhere classified.

Is B81 a billable code?

No. B81 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is B81 in?

B81 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B81 become effective?

B81 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B81?

B81 belongs to category B81, which includes 6 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.