ICD-10 Code B87 – Myiasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B87 – Myiasis
What it is
B87 identifies myiasis, an infestation of human tissue by fly larvae. Use it when documentation states maggots or larvae are present in skin, wounds, or body openings.
Clinical signs
Findings may include visible larvae, painful or draining wounds, and local inflammation. Clinical features vary; refer to documentation.
When to use this code
Use B87 when the record clearly documents myiasis as the diagnosis. It may apply to wound, skin, or other tissue infestation by fly larvae. Code the documented site and any associated complications if supported by the note.
Do not use for
Do not use this code for ordinary wound infection, cellulitis, or foreign body without larvae. Check documentation if the note only mentions suspected infestation.
Coding tip
Confirm the provider documents myiasis explicitly and identify the affected site before assigning the code.