ICD-9-CM diagnosis code (retired)
412 — Old myocardial infarction
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 412
412 is an ICD-9-CM diagnosis code for old myocardial infarction. 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, I25.2 (Old myocardial infarction). The match is exact.
ICD-10-CM equivalents
- I25.2Old myocardial infarctionexact match
Common questions about 412
What is the ICD-10 code for ICD-9 412?
- The GEMs map 412 to ICD-10-CM I25.2.
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.