ICD-9-CM diagnosis code (retired)
388.2 — Sudden hearing loss, unspecified
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 388.2
388.2 is an ICD-9-CM diagnosis code for sudden hearing loss, unspecified. 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 one ICD-10-CM code, H91.23 (Sudden idiopathic hearing loss, bilateral). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- H91.23Sudden idiopathic hearing loss, bilateralapproximate
Common questions about 388.2
What is the ICD-10 code for ICD-9 388.2?
- The GEMs map 388.2 to ICD-10-CM H91.23.
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.