Heart Transplant or Implant of Heart Assist System with MCC
Assigned before MDC logic runs, so it is driven by the procedure rather than the principal diagnosis. The grouper still reports the principal diagnosis's own MDC on a grouped claim.
CMS publishes classification in the Definitions Manual and weights in Table 5 of the IPPS rule, one spreadsheet per year. These are the 9 versions this grouper supports.
| Version | Fiscal year | Effective | Relative weight |
|---|---|---|---|
| V44.0 | FY 2027 | 2026-10-01 | 28.0947 |
| V43.1 | FY 2026 (Apr-Sep) | 2026-04-01 | 28.0239 |
| V43.0 | FY 2026 (Oct-Mar) | 2025-10-01 | 28.0239 |
| V42.1 | FY 2025 (Apr-Sep) | 2025-04-01 | 28.1683 |
| V42.0 | FY 2025 (Oct-Mar) | 2024-10-01 | 28.1683 |
| V41.1 | FY 2024 (Apr-Sep) | 2024-04-01 | 27.0986 |
| V41.0 | FY 2024 (Oct-Mar) | 2023-10-01 | 27.0986 |
| V40.1 | FY 2023 (Apr-Sep) | 2023-04-01 | 28.1461 |
| V40.0 | FY 2023 (Oct-Mar) | 2022-10-01 | 28.1461 |
Range 27.0986 to 28.1683. A dash means the DRG did not exist in that version.
9 ICD-10-PCS procedures. Each maps here on its own; procedure clusters can also reach this DRG through combinations, listed separately below.
51 procedure clusters across 22 codes. A cluster groups differently from its member codes, so none of these appear in the list above.
Relative weight is not payment: actual reimbursement also applies wage index, capital, DSH and IME adjustments, and outliers. Group an encounter to see which DRG it actually lands in.
Open the MS-DRG grouper