Other intestinal helminthiases, not elsewhere classified (B81) ICD-10-CM
The B81 code range covers other intestinal helminthiases, not elsewhere classified with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the B81 Range 7 codes · 6 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B81 range.
Anisakiasis
Infection with roundworms of the genus ANISAKIS. Human infection results from the consumption of fish harboring roundworm larvae. The worms may cause acute NAUSEA; VOMITING; or penetrate into the wall of the DIGESTIVE TRACT where they give rise to EOSINOPHILIC GRANULOMA in the STOMACH; INTESTINES; or the OMENTUM.
About the B81 Code Range
Intestinal helminthiases are infections of the intestines by parasitic worms. B81 groups other intestinal worm infections not classified elsewhere.
The subdivisions distinguish named infections: anisakiasis (B81.0), intestinal capillariasis (B81.1), trichostrongyliasis (B81.2), and intestinal angiostrongyliasis (B81.3). B81.4 identifies mixed intestinal worm infections, while B81.8 identifies other specified intestinal worm infections.
Questions About This Page
How many billable codes are in the B81 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B81 range classify?
The range classifies other intestinal helminthiases, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
