ICD-9-CM diagnosis code (retired)
383.89 — Other disorders of mastoid
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 383.89
383.89 is an ICD-9-CM diagnosis code for other disorders of mastoid. 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, H70.899 (Other mastoiditis and related conditions, unspecified ear). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- H70.899Other mastoiditis and related conditions, unspecified earapproximate
Common questions about 383.89
What is the ICD-10 code for ICD-9 383.89?
- The GEMs map 383.89 to ICD-10-CM H70.899.
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.