ICD-10 Code B87.82 – Intestinal Myiasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B87.82 – Intestinal myiasis
What it is
B87.82 identifies intestinal myiasis, which means fly larvae are present in the intestinal tract. Use it when documentation specifically states this parasitic infestation.
Clinical signs
Clinical features vary; refer to documentation. Reported findings may include abdominal discomfort, diarrhea, nausea, or passage of larvae in stool, but confirmation should come from the medical record.
When to use this code
Use B87.82 when the provider documents intestinal myiasis, intestinal infestation by fly larvae, or a confirmed diagnosis affecting the bowel. It may be supported by stool findings, endoscopic evidence, or a clear clinical statement. Check documentation if the note only mentions suspected parasitic infection.
Do not use for
Do not use this code for nonspecific intestinal parasitosis, foodborne illness, or other helminth infections without larvae in the bowel. If the record does not clearly identify myiasis, check documentation.
Coding tip
Code B87.82 only when the record clearly names intestinal myiasis; otherwise, query for the exact organism or diagnosis.