Acquired stenosis of l ext ear canal secondary to trauma

This code describes a narrowing of the left external auditory canal that developed after a traumatic injury. This stenosis can impede sound transmission and may lead to conductive hearing loss or recurrent ear infections. It is an acquired condition, not congenital.

Apply this code when documentation clearly indicates a post-traumatic narrowing of the left external ear canal. This typically follows injuries such as lacerations, fractures, or burns affecting the ear. Supporting documentation should specify the laterality (left) and the traumatic etiology.

• Ensure documentation specifies "left" ear; otherwise, an unspecified laterality code may be more appropriate.
• Distinguish from congenital stenosis (Q16.1) or stenosis due to inflammation/infection (H61.39-).
• Code any associated external ear trauma (e.g., S00.4-) or hearing loss (H90.-) separately.