MS-DRG 1 – Heart Transplant or Implant of Heart Assist System with MCC
A Surgical DRG in Pre-MDC (Pre-MDC). Inpatient cases group to DRG 1 when one of the 23 ICD-10-PCS operating-room procedures listed below is reported. Its FY 2026 relative weight is 28.0239 with a geometric mean length of stay of 25.8 days.
Severity family
The grouper first assigns the case to Pre-MDC from the principal diagnosis, then matches a qualifying operating-room procedure from the ICD-10-PCS list below (this is a Surgical DRG), then applies the severity split from secondary diagnoses: with MCC → 1; without MCC → 2.
Procedure Codes 23 codes · 7 categories
02HA Heart and Great Vessels, Insertion9 codes
- 02HA0QZ Insertion of Implantable Heart Assist System into Heart, Open Approach
- 02HA0RS Insertion of Biventricular Short-term External Heart Assist System into Heart, Open Approach
- 02HA0RZ Insertion of Short-term External Heart Assist System into Heart, Open Approach
- 02HA3QZ Insertion of Implantable Heart Assist System into Heart, Percutaneous Approach
- 02HA3RS Insertion of Biventricular Short-term External Heart Assist System into Heart, Percutaneous Approach
- 02HA3RZ Insertion of Short-term External Heart Assist System into Heart, Percutaneous Approach
- 02HA4QZ Insertion of Implantable Heart Assist System into Heart, Percutaneous Endoscopic Approach
- 02HA4RS Insertion of Biventricular Short-term External Heart Assist System into Heart, Percutaneous Endoscopic Approach
- 02HA4RZ Insertion of Short-term External Heart Assist System into Heart, Percutaneous Endoscopic Approach
02PW Heart and Great Vessels, Removal1 code
- 02PW3RZ Removal of Short-term External Heart Assist System from Thoracic Aorta, Descending, Percutaneous Approach
02RA Heart and Great Vessels, Replacement2 codes
02RK Heart and Great Vessels, Replacement1 code
- 02RK0JZ Replacement of Right Ventricle with Synthetic Substitute, Open Approach
02WA Heart and Great Vessels, Revision6 codes
- 02WA0QZ Revision of Implantable Heart Assist System in Heart, Open Approach
- 02WA0RZ Revision of Short-term External Heart Assist System in Heart, Open Approach
- 02WA3QZ Revision of Implantable Heart Assist System in Heart, Percutaneous Approach
- 02WA3RZ Revision of Short-term External Heart Assist System in Heart, Percutaneous Approach
- 02WA4QZ Revision of Implantable Heart Assist System in Heart, Percutaneous Endoscopic Approach
- 02WA4RZ Revision of Short-term External Heart Assist System in Heart, Percutaneous Endoscopic Approach
02WW Heart and Great Vessels, Revision1 code
- 02WW3RZ Revision of Short-term External Heart Assist System in Thoracic Aorta, Descending, Percutaneous Approach
Qualifying Diagnosis Codes
Frequently Asked Questions
What is MS-DRG 1?
MS-DRG 1 (Heart Transplant or Implant of Heart Assist System with MCC) is a surgical DRG in Pre-MDC (Pre-MDC). Its FY 2026 relative weight is 28.0239 with a geometric mean length of stay of 25.8 days.
What is the difference between DRG 1, 2?
All 2 share the same base category; the severity of secondary diagnoses separates them: 1 (with MCC), 2 (without MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
How many procedure codes group to DRG 1?
23 ICD-10-PCS operating-room procedure codes group to this DRG.
What is the relative weight of DRG 1?
The FY 2026 relative weight of this DRG is 28.0239, meaning reimbursement of roughly 28.02 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
