-- H90.A1 Conductive hearing loss, unilateral, with restricted hearing on the contralateral side

--- H90.A11 Conductive hearing loss, unilateral, right ear with restricted hearing on the contralateral side

--- H90.A12 Conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side

-- H90.A2 Sensorineural hearing loss, unilateral, with restricted hearing on the contralateral side

--- H90.A21 Sensorineural hearing loss, unilateral, right ear, with restricted hearing on the contralateral side

--- H90.A22 Sensorineural hearing loss, unilateral, left ear, with restricted hearing on the contralateral side

-- H90.A3 Mixed conductive and sensorineural hearing loss, unilateral with restricted hearing on the contralateral side

--- H90.A31 Mixed conductive and sensorineural hearing loss, unilateral, right ear with restricted hearing on the contralateral side

--- H90.A32 Mixed conductive and sensorineural hearing loss, unilateral, left ear with restricted hearing on the contralateral side