Temporary auditory threshold shift, left ear

This code signifies a temporary elevation in the hearing threshold of the left ear, indicating a reversible decrease in auditory sensitivity. It typically results from acute exposure to loud noise, leading to a transient impairment of hearing that is expected to recover.

Use this code when documentation specifies a temporary auditory threshold shift affecting the left ear, often following noise exposure (e.g., concert, industrial noise, firearm discharge). Supporting documentation should include audiometric findings demonstrating a temporary shift and later recovery, or a clear clinical statement of temporary noise-induced hearing loss.

• Ensure the documentation explicitly states "temporary" and specifies the "left ear."
• Do not confuse with permanent hearing loss codes; this condition is by definition reversible.
• Consider sequencing with an external cause code (e.g., W42.0XXA for exposure to noise) if the cause is documented.