Other helminthiases (B83) ICD-10-CM
The B83 code range covers other helminthiases with 8 ICD-10-CM diagnosis codes. 7 of them are billable and valid for claim submission in fiscal year 2026, 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.
- capillariasis NOS B81.1
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- intestinal capillariasis B81.1
Codes in the B83 Range 8 codes · 7 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B83 range.
Central Nervous System Helminthiasis
Infections of the BRAIN; SPINAL CORD; or MENINGES caused by HELMINTHS (parasitic worms).
Gnathostomiasis
Infections with nematodes of the genus GNATHOSTOMA, superfamily THELAZIOIDEA. Gnathostomiasis is a food-borne zoonosis caused by eating undercooked or raw fish or meat.
Helminthiasis
Infestation with parasitic worms of the helminth class.
Helminthiasis, Animal
Infestation of animals with parasitic worms of the helminth class. The infestation may be experimental or veterinary.
About the B83 Code Range
The ICD-10 code B83 category covers a range of parasitic worm infections known as other helminthiases, which are caused by various types of parasitic worms not classified elsewhere. These codes are used to document and diagnose different helminth infections affecting multiple body systems.
This section includes specific codes such as B83.0 for visceral larva migrans, which covers infections caused by migrating larvae of parasites like Toxocara species, commonly referred to as ocular toxocariasis or toxocariasis myositis. B83.1 identifies gnathostomiasis, infections caused by Gnathostoma worms producing cerebral or skin symptoms. B83.2 relates to angiostrongyliasis due to Parastrongylus cantonensis, often presenting as eosinophilic meningitis. Other codes include B83.3 for syngamiasis (infection by Mammomonogamus or Syngamus species) and B83.4 for internal hirudiniasis, which is leech infestation. The code B83.8 is for various other specified helminth infections like those caused by Capillaria or Spirometra species. Finally, B83.9 is used for unspecified helminthiases, including parasitic infections causing arthropathy or neuroretinitis. These ICD-10 codes assist healthcare professionals in precisely identifying and reporting these parasitic worm infections for appropriate care and surveillance.
Questions About This Page
How many billable codes are in the B83 range?
Of the 8 codes in this range, 7 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the B83 range classify?
The range classifies other helminthiases. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
