H90 - Conductive and sensorineural hearing loss
H90.4 - Sensorineural hearing loss, unilateral with unrestricted hearing on the contralateral side
H90.41 - Sensorineural hearing loss, unilateral, right ear, with unrestricted hearing on the contralateral side
H90.42 - Sensorineural hearing loss, unilateral, left ear, with unrestricted hearing on the contralateral side