MS-DRG 284: ACUTE MYOCARDIAL INFARCTION, EXPIRED WITH CC
MS-DRG 284 is acute myocardial infarction, expired with cc, in MDC 05 (a medical DRG), at the with-CC (complication or comorbidity) level. Its FY2027 relative weight is 0.7525, so a case here pays less than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 1.60 days. 18 ICD-10-CM principal diagnoses group into MS-DRGs 280–285 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 0.7525
- Geometric mean LOS
- 1.60
- Arithmetic mean LOS
- 2.20
- Post-acute transfer
- No
Principal diagnoses that group to MS-DRGs 280–285
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 18 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 280–285 the case lands in. The 18 most-searched:
- I21.4Non-ST elevation (NSTEMI) myocardial infarction
- I21.3ST elevation (STEMI) myocardial infarction of unspecified site
- I21.9Acute myocardial infarction, unspecified
- I21.A1Myocardial infarction type 2
- I21.19ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall
- I21.09ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall
- I21.02ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery
- I21.11ST elevation (STEMI) myocardial infarction involving right coronary artery
- I21.29ST elevation (STEMI) myocardial infarction involving other sites
- I21.01ST elevation (STEMI) myocardial infarction involving left main coronary artery
- I21.A9Other myocardial infarction type
- I22.0Subsequent ST elevation (STEMI) myocardial infarction of anterior wall
- I22.1Subsequent ST elevation (STEMI) myocardial infarction of inferior wall
- I22.2Subsequent non-ST elevation (NSTEMI) myocardial infarction
- I22.8Subsequent ST elevation (STEMI) myocardial infarction of other sites
- I22.9Subsequent ST elevation (STEMI) myocardial infarction of unspecified site
- I21.21ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery
- I21.BMyocardial infarction with coronary microvascular dysfunction
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 284.
| 283 | ACUTE MYOCARDIAL INFARCTION, EXPIRED WITH MCC | 1.9619 | +1.2094 |
| 284 | ACUTE MYOCARDIAL INFARCTION, EXPIRED WITH CC | 0.7525 | |
| 285 | ACUTE MYOCARDIAL INFARCTION, EXPIRED WITHOUT CC/MCC | 0.5390 | -0.2135 |
All FY2027 MS-DRGs · MDC 05