ICD-10 Code B81.8 – Other specified intestinal helminthiases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B81.8 – Other specified intestinal helminthiases
What it is
B81.8 identifies intestinal helminth infections that are specified but do not have a more exact ICD-10 code. Use it for documented worm infections of the intestine when the organism is named and no other code fits.
Clinical signs
Clinical features vary; refer to documentation. Findings may include abdominal discomfort, diarrhea, nausea, weight loss, or evidence of intestinal parasite infection on stool or other diagnostic testing.
When to use this code
Use B81.8 when the record clearly states an intestinal helminthiasis that is not classified elsewhere. It is appropriate when the parasite is identified, but the chart does not support a more specific code. Check documentation if the organism name is unclear.
Do not use for
Do not use this code for unspecified intestinal parasitic disease or for infections with a more specific ICD-10 option. Do not assign it when the helminth does not involve the intestine.
Coding tip
Confirm the parasite name and site in the note before coding; if the documentation is vague, use the most accurate unspecified option only when supported.