All ICD10 Codes

DRG 321

Surgical DRG

Percutaneous Cardiovascular Procedures with Intraluminal Device with MCC or 4+ Arteries/Intraluminal Devices

TypeSurgicalMDC05

What is MS-DRG 321?

MS-DRG 321 is a Surgical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 05 (MDC 05) with a Major Complication or Comorbidity (MCC). For FY 2026 it carries a relative weight of 2.7208 with a geometric mean length of stay of 3.7 days and an arithmetic mean of 4.9 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Classification
Surgical DRG
Procedure-driven grouping
MDC
Major Diagnostic Category 05
Linked Codes
0 diagnosis
8 procedure

FY 2026 Payment Data

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

Relative Weight
2.7208
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
3.7 days
Used for transfer payment calculations
Arithmetic Mean LOS
4.9 days
Average length of stay
Post-Acute Transfer
No
Not subject to the transfer policy

Linked ICD-10-PCS Procedure Mappings

  • 02700ZZ

    Dilation of Coronary Artery, One Artery, Open Approach

    BillableSection 0
  • 02710ZZ

    Dilation of Coronary Artery, Two Arteries, Open Approach

    BillableSection 0
  • 02720ZZ

    Dilation of Coronary Artery, Three Arteries, Open Approach

    BillableSection 0
  • 02730ZZ

    Dilation of Coronary Artery, Four or More Arteries, Open Approach

    BillableSection 0
  • 02H00YZ

    Insertion of Other Device into Coronary Artery, One Artery, Open Approach

    BillableSection 0
  • 02H10YZ

    Insertion of Other Device into Coronary Artery, Two Arteries, Open Approach

    BillableSection 0
  • 02H20YZ

    Insertion of Other Device into Coronary Artery, Three Arteries, Open Approach

    BillableSection 0
  • 02H30YZ

    Insertion of Other Device into Coronary Artery, Four or More Arteries, Open Approach

    BillableSection 0