Category I21
Non-Billable Category
FY2027 Dataset
I21: Acute myocardial infarction
Parent Chapter: Chapter 9: Diseases of the circulatory system
Notice on Coding Specificity: Category I21 is a 3-character heading and cannot be reported directly on healthcare claims. You must assign one of the specific child codes listed below.
Specific Child Codes in Category I21
| Code | Official Descriptor | Status | Action |
|---|---|---|---|
| I21.01 | STEMI involving left main coronary artery | Billable Code | View Code |
| I21.02 | STEMI involving left anterior descending coronary artery | Billable Code | View Code |
| I21.09 | STEMI involving oth coronary artery of anterior wall | Billable Code | View Code |
| I21.11 | STEMI involving right coronary artery | Billable Code | View Code |
| I21.19 | STEMI involving oth coronary artery of inferior wall | Billable Code | View Code |
| I21.21 | STEMI involving left circumflex coronary artery | Billable Code | View Code |
| I21.29 | STEMI involving oth sites | Billable Code | View Code |
| I21.3 | ST elevation (STEMI) myocardial infarction of unsp site | Billable Code | View Code |
| I21.4 | Non-ST elevation (NSTEMI) myocardial infarction | Billable Code | View Code |
| I21.9 | Acute myocardial infarction, unspecified | Billable Code | View Code |
| I21.A1 | Myocardial infarction type 2 | Billable Code | View Code |
| I21.A9 | Other myocardial infarction type | Billable Code | View Code |
| I21.B | Myocardial infarction with coronary microvascular dysfnct | Billable Code | View Code |
| I21 | Acute myocardial infarction | Non-Billable | View Code |
| I21.0 | ST elevation (STEMI) myocardial infarction of anterior wall | Non-Billable | View Code |
| I21.1 | ST elevation (STEMI) myocardial infarction of inferior wall | Non-Billable | View Code |
| I21.2 | ST elevation (STEMI) myocardial infarction of other sites | Non-Billable | View Code |
| I21.A | Other type of myocardial infarction | Non-Billable | View Code |