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ICD-9-CM diagnosis code (retired)

389.21 — Mixed hearing loss, unilateral

ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.

About ICD-9-CM 389.21

389.21 is an ICD-9-CM diagnosis code for mixed hearing loss, unilateral. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.

The CMS General Equivalence Mappings translate it to 2 ICD-10-CM codes, such as H90.71 (Mixed conductive and sensorineural hearing loss, unilateral, right ear, with unrestricted hearing on the contralateral side) and H90.72 (Mixed conductive and sensorineural hearing loss, unilateral, left ear, with unrestricted hearing on the contralateral side). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 389.21

What is the ICD-10 code for ICD-9 389.21?

The GEMs map 389.21 to ICD-10-CM H90.71 and H90.72.

GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.