FY2024
Effective from
- Added
Myocardial infarction with coronary microvascular dysfunction
Billable diagnosis code
CDC/NCHS · FY2024Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2023-10-01
Latest recorded change · FY2024
Effective from
Myocardial infarction with coronary microvascular dysfunction
Billable diagnosis code
CDC/NCHS · FY2024| All editions | Effective from | Code history |
|---|---|---|
| FY2024 | 2023-10-01 | Added |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: I21.A9
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| I21.0 | ST elevation (STEMI) myocardial infarction of anterior wall | Category · further specificity required |
| I21.1 | ST elevation (STEMI) myocardial infarction of inferior wall | Category · further specificity required |
| I21.2 | ST elevation (STEMI) myocardial infarction of other sites | Category · further specificity required |
| I21.3 | ST elevation (STEMI) myocardial infarction of unspecified site | Billable / specific |
| I21.4 | Non-ST elevation (NSTEMI) myocardial infarction | Billable / specific |
| I21.9 | Acute myocardial infarction, unspecified | Billable / specific |
| I21.A | Other type of myocardial infarction | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗
Excludes 1 · acute coronary occlusion with myocardial infarction (I21.0-I21.B, I22.-)