ICD-9-CM Myocardial Infarction Codes

ICD-9-CM Myocardial Infarction Coding


Category 410 Acute myocardial infarction with following 5th digit

0 episode of care unspecified
1 initial episode of care
2 subsequent episode of care


Subcategories describe the site of infarct as follows


410.0x Of anterolateral wall
ST elevation myocardial infarction (STEMI) of anterolateral wall


410.1x Of other anterior wall

410.2x Of inferolateral wall
ST elevation myocardial infarction (STEMI) of inferolateral wall



410.3x Of inferoposterior wall
ST elevation myocardial infarction (STEMI) of inferoposterior wall



410.4x Of other inferior wall
Infarction diaphragmatic wall (with contiguous portion of intraventricular septum) :: :: Infarction inferior (wall) NOS



410.5x Of other lateral wall



410.6x True posterior wall infarction



410.7x Subendocardial infarction



410.8x Of other specified sites



410.9x Unspecified site


Codes from Category are coded till seveth week and after seven weeks code 412 should be used to indicate MI



ICD-10 I21-I22