ICD-10 Code B37.84 – Candidal Otitis Externa (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B37.84 – Candidal otitis externa
What it is
B37.84 identifies otitis externa caused by Candida species. Use it when the external ear canal infection is documented as fungal and specifically candidal.
Clinical signs
Clinical features vary; refer to documentation. Standard findings may include ear canal inflammation, itching, discomfort, discharge, or debris consistent with fungal otitis externa.
When to use this code
Use B37.84 when the provider documents candidal infection of the external ear canal, including candidal otitis externa or fungal otitis externa due to Candida. Apply it when the diagnosis is confirmed or clearly stated in the record. Check documentation if the organism is not specified.
Do not use for
Do not use this code for noncandidal otitis externa or for middle ear infection. If the record only says “otitis externa” without Candida, check documentation before assigning B37.84.
Coding tip
Code the organism only when Candida is documented; otherwise, use the more general otitis externa code supported by the chart.