Noise effects on left inner ear

This code signifies damage or dysfunction of the left inner ear resulting from exposure to excessive or prolonged noise. This can manifest as hearing loss, tinnitus, or other vestibular symptoms specifically attributed to acoustic trauma. It indicates a direct causal link between noise exposure and the inner ear pathology.

Apply this code when documentation clearly states a diagnosis of noise-induced inner ear damage affecting the left ear. This includes conditions like noise-induced hearing loss (NIHL) or noise-induced tinnitus localized to the left side. Supporting documentation should specify the laterality and the causal relationship to noise exposure.

• Ensure documentation explicitly states "left ear" and links the condition to noise exposure.
• Do not use for general hearing loss or tinnitus without a confirmed noise etiology.
• Consider sequencing with external cause codes (e.g., W49.XXXA for exposure to other man-made environmental factors) if the specific noise event is known and relevant.