Other acquired stenosis of left external ear canal

This code signifies a narrowing or obstruction of the left external auditory canal that developed after birth, not due to a congenital anomaly. This acquired stenosis can result from various causes, impeding sound transmission to the middle ear.

Apply this code when documentation specifies an acquired, non-congenital narrowing of the left external ear canal. This includes stenosis resulting from trauma, inflammation, infection (e.g., chronic otitis externa), or previous surgical interventions. Ensure the laterality (left ear) is clearly documented.

• Differentiate from congenital stenosis (Q16.1) and impacted cerumen (H61.2-).
• Always confirm laterality; separate codes exist for right (H61.391) and bilateral (H61.393) involvement.
• Code any underlying cause of the stenosis, if known and documented, as an additional diagnosis.