ICD-9-CM diagnosis code (retired)
383.01 — Subperiosteal abscess 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 383.01
383.01 is an ICD-9-CM diagnosis code for Subperiosteal abscess 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, H70.019 (Subperiosteal abscess of mastoid, unspecified ear). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- H70.019Subperiosteal abscess of mastoid, unspecified earapproximate
Common questions about 383.01
What is the ICD-10 code for ICD-9 383.01?
- The GEMs map 383.01 to ICD-10-CM H70.019.
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.