Sudden idiopathic hearing loss, right ear

This code signifies an acute, unexplained sensorineural hearing loss that develops rapidly, typically within 72 hours, affecting the right ear. It is characterized by a sudden onset without an identifiable cause such as trauma, infection, or ototoxic drug exposure.

Apply this code when documentation clearly indicates a new onset of sudden hearing loss in the right ear, and the etiology is determined to be idiopathic after a thorough workup. Supporting documentation should include audiometric findings confirming sensorineural hearing loss and a physician's statement ruling out other potential causes.

• Ensure the laterality (right ear) is explicitly documented.
• Distinguish from conductive hearing loss or hearing loss due to known causes, which would require different codes.
• Consider sequencing with codes for associated symptoms if documented and treated.