ICD-10 Code B76.0 – Ancylostomiasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B76.0 – Ancylostomiasis
What it is
Ancylostomiasis is hookworm infection caused by Ancylostoma species. It usually affects the intestine and can lead to blood loss or nutritional problems if infection persists.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include abdominal discomfort, diarrhea, anemia, and eosinophilia, with possible skin or respiratory symptoms during larval migration.
When to use this code
Use B76.0 when the provider documents ancylostomiasis, hookworm disease due to Ancylostoma, or a confirmed intestinal infection from these parasites. Code it when the diagnosis is established in the record, not just suspected.
If the note identifies a different helminth infection or only exposure history, choose the documented condition instead. Check documentation when the organism or site is unclear.
Do not use for
Do not use this code for non-ancylostoma hookworm infections or for symptoms such as anemia or abdominal pain without a documented parasitic diagnosis. Check documentation.
Coding tip
Match the code to the named parasite in the provider note; “hookworm” alone may need clarification before you assign B76.0.