ICD-10 Code H90.A31 – Mixed conductive and sensorineural hearing loss, unilateral, right ear with restricted hearing on the contralateral side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H90.A31 – Mixed conductive and sensorineural hearing loss, unilateral, right ear with restricted hearing on the contralateral side
What it is
This code identifies mixed hearing loss in the right ear, meaning both conductive and sensorineural components are present. The left ear has restricted hearing, so the overall pattern is not normal hearing in the opposite ear.
Clinical signs
Typical findings include reduced hearing on audiologic testing with evidence of both middle-ear and inner-ear involvement. Clinical features vary; refer to documentation for laterality and the degree of contralateral hearing restriction.
When to use this code
Use this code when the record clearly documents mixed conductive and sensorineural hearing loss limited to the right ear, along with restricted hearing in the left ear. It may apply after audiometry, otologic evaluation, or specialist assessment confirms the pattern. Check documentation if laterality is unclear.
Do not use for
Do not use this code for unilateral hearing loss without mixed conductive and sensorineural components, or when the opposite ear is normal. If the chart does not specify right ear involvement or contralateral restriction, do not assume this code.
Coding tip
Verify both the mixed loss and the contralateral hearing restriction before assigning H90.A31.