2026 ICD-10-CM Diagnosis Code B81Other intestinal helminthiases, not elsewhere classified

ICD-10-CM Codes›A00–B99›B65-B83›B81

ICD-10-CM B81
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B81 is a non-billable ICD-10-CM category code for other intestinal helminthiases, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B81.0, B81.1, B81.2, and B81.3.

Code Identity

ICD-10-CM Code
B81
Billable Status
No — Non-Billable Category
Code Describes
Other intestinal helminthiases, not elsewhere classified
Chapter
B65-B83
Helminthiases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB65-B83Helminthiases
CategoryB81Other intestinal helminthiases, not elsewhere classified
This CodeB81Other intestinal helminthiases, not elsewhere classified

Specific Coding for Other intestinal helminthiases, not elsewhere classifiedOverview

Non-specific codes like B81 require more characters. Use one of these billable codes instead:

  • Use B81.0 for Anisakiasis

  • Use B81.1 for Intestinal capillariasis

  • Use B81.2 for Trichostrongyliasis

  • Use B81.3 for Intestinal angiostrongyliasis

  • Use B81.4 for Mixed intestinal helminthiases

  • Use B81.8 for Other specified intestinal helminthiases

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • angiostrongyliasis due to:
  • Angiostrongylus cantonensis B83.2
  • Parastrongylus cantonensis B83.2

Patient EducationClinical

Parasitic Diseases

Parasites are living things that use other living things - like your body - for food and a place to live. You can get them from contaminated food or water, a bug bite, or sexual contact. Some parasitic diseases are easily treated and some are not.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B81Overview

Is B81 (Other intestinal helminthiases, not elsewhere classified) a billable code?

No. This is a category header that groups the codes for other intestinal helminthiases, not elsewhere classified, and headers cannot be submitted on claims. Claims for other intestinal helminthiases, not elsewhere classified need a more specific code from this category, such as B81.0, B81.1, and B81.2.