All ICD10 Codes

DRG 284

Medical DRG

Acute Myocardial Infarction, Expired with CC

TypeMedicalMDC05Dx Codes18

What is MS-DRG 284?

MS-DRG 284 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 05 (MDC 05) with a Complication or Comorbidity (CC). It maps to 18 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 0.6922 with a geometric mean length of stay of 1.5 days and an arithmetic mean of 2 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Classification
Medical DRG
Diagnosis-driven grouping
MDC
Major Diagnostic Category 05
Linked Codes
18 diagnosis
Billable Dx
100%
18 of 18 shown

FY 2026 Payment Data

Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).

Relative Weight
0.6922
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
1.5 days
Used for transfer payment calculations
Arithmetic Mean LOS
2 days
Average length of stay
Post-Acute Transfer
No
Not subject to the transfer policy

Related MS-DRGs in This Severity Group

The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.

DRGTitleRel. WeightGMLOS
283Acute Myocardial Infarction, Expired with MCC1.98083.2 days
284Acute Myocardial Infarction, Expired with CCThis page0.69221.5 days
285Acute Myocardial Infarction, Expired without CC/MCC0.59891.1 days

Linked ICD-10-CM Diagnosis Mappings

  • I21.01

    ST elevation (STEMI) myocardial infarction involving left main coronary artery

    BillableChapter 9
  • I21.02

    ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery

    BillableChapter 9
  • I21.09

    ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall

    BillableChapter 9
  • I21.11

    ST elevation (STEMI) myocardial infarction involving right coronary artery

    BillableChapter 9
  • I21.19

    ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall

    BillableChapter 9
  • I21.21

    ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery

    BillableChapter 9
  • I21.29

    ST elevation (STEMI) myocardial infarction involving other sites

    BillableChapter 9
  • I21.3

    ST elevation (STEMI) myocardial infarction of unspecified site

    BillableChapter 9
  • I21.4

    Non-ST elevation (NSTEMI) myocardial infarction

    BillableChapter 9
  • I21.9

    Acute myocardial infarction, unspecified

    BillableChapter 9
  • I21.A1

    Myocardial infarction type 2

    BillableChapter 9
  • I21.A9

    Other myocardial infarction type

    BillableChapter 9
  • I21.B

    Myocardial infarction with coronary microvascular dysfunction

    BillableChapter 9
  • I22.0

    Subsequent ST elevation (STEMI) myocardial infarction of anterior wall

    BillableChapter 9
  • I22.1

    Subsequent ST elevation (STEMI) myocardial infarction of inferior wall

    BillableChapter 9
  • I22.2

    Subsequent non-ST elevation (NSTEMI) myocardial infarction

    BillableChapter 9
  • I22.8

    Subsequent ST elevation (STEMI) myocardial infarction of other sites

    BillableChapter 9
  • I22.9

    Subsequent ST elevation (STEMI) myocardial infarction of unspecified site

    BillableChapter 9