Exostosis of right external canal

This code describes an abnormal bony growth occurring within the right external auditory canal. This benign condition, often referred to as "surfer's ear," results from prolonged exposure to cold water and wind, leading to the formation of osteomas or exostoses that can narrow the ear canal.

Use this code when documentation clearly indicates the presence of exostosis specifically located in the right external auditory canal. This diagnosis is typically made via otoscopic examination, often confirmed by imaging studies like CT scans if the extent of the growth needs further evaluation.

• Ensure the laterality (right ear) is explicitly documented to support this specific code.
• Distinguish from other external ear canal disorders, such as otitis externa or foreign body, which have different codes.
• Consider if any associated symptoms, like hearing loss (H90.xx) or cerumen impaction (H61.2x), are also present and warrant additional coding.