ICD-9-CM diagnosis code (retired)
410.12 — Acute myocardial infarction of other anterior wall, subsequent episode of care
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 410.12
410.12 is an ICD-9-CM diagnosis code for acute myocardial infarction of other anterior wall, subsequent episode of care. 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, I21.09 (ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- I21.09ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wallapproximate
Common questions about 410.12
What is the ICD-10 code for ICD-9 410.12?
- The GEMs map 410.12 to ICD-10-CM I21.09.
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.