ICD-9-CM diagnosis code (retired)
521.10 — Excessive attrition, 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 521.10
521.10 is an ICD-9-CM diagnosis code for excessive attrition, 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, K03.0 (Excessive attrition of teeth). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- K03.0Excessive attrition of teethapproximate
Common questions about 521.10
What is the ICD-10 code for ICD-9 521.10?
- The GEMs map 521.10 to ICD-10-CM K03.0.
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.