ICD-9-CM diagnosis code (retired)
526.4 — Inflammatory conditions of jaw
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 526.4
526.4 is an ICD-9-CM diagnosis code for inflammatory conditions of jaw. 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, M27.2 (Inflammatory conditions of jaws). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- M27.2Inflammatory conditions of jawsapproximate
Common questions about 526.4
What is the ICD-10 code for ICD-9 526.4?
- The GEMs map 526.4 to ICD-10-CM M27.2.
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.