ICD-10 Code B83 – Other helminthiases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B83 – Other helminthiases
What it is
B83 is used for helminth infections that do not have a more specific ICD-10 code. It covers other worm infestations when documentation identifies a helminthiasis but not the exact organism.
Clinical signs
Clinical features vary; refer to documentation. Helminth infections may cause abdominal discomfort, diarrhea, weight loss, or eosinophilia, but the exact presentation depends on the parasite involved.
When to use this code
Use B83 when the record clearly documents an “other helminthiasis” or a worm infection that is not classified elsewhere. It is appropriate when the provider names a helminth infection but does not specify a more precise code. If the organism is identified, code the specific infection instead.
Do not use for
Do not use B83 for helminth infections with a more specific ICD-10 code, such as common named parasitic diseases. Do not assign it when documentation is unclear; check documentation.
Coding tip
Look for the exact parasite name in the chart before defaulting to B83.