MS-DRG

MS-DRG v44 changes

Effective October 1, 2026

DRGs CMS added, deleted or retitled in grouper v44, effective October 1, 2026, compared with v43.1. v44 defines 768 DRGs. Changes to which codes group to a DRG are not covered here.

DRGs added

DRGs deleted

Titles revised

MedCoder records DRGs added, deleted or retitled between grouper versions, read from the DRG titles in the CMS grouper package. Changes to which codes group to a DRG are not recorded here.

DRGs added (14)

210 — Cardiac Pacemaker Revision or Device Replacement with MCC
211 — Cardiac Pacemaker Revision or Device Replacement without MCC
361 — Other Circulatory System O.R. Procedures with MCC
362 — Other Circulatory System O.R. Procedures without MCC
400 — Knee Procedures with Principal Diagnosis of Infection
403 — Hip or Knee Procedures with Principal Diagnosis of Periprosthetic Joint Infection with MCC or Insertion of Antibiotic-eluting Bone Void Filler
404 — Hip or Knee Procedures with Principal Diagnosis of Periprosthetic Joint Infection without MCC
449 — Revision of Hip or Knee Prosthesis
523 — Extensive or Complex Spinal Fusion Procedures Except Cervical with MCC
524 — Extensive or Complex Spinal Fusion Procedures Except Cervical with CC
525 — Extensive or Complex Spinal Fusion Procedures Except Cervical without CC/MCC
731 — Uterine and Adnexa Procedures for Malignancy with MCC
732 — Uterine and Adnexa Procedures for Malignancy with CC
733 — Uterine and Adnexa Procedures for Malignancy without CC/MCC

DRGs deleted (18)

258 — Cardiac Pacemaker Device Replacement with MCC
259 — Cardiac Pacemaker Device Replacement without MCC
260 — Cardiac Pacemaker Revision Except Device Replacement with MCC
261 — Cardiac Pacemaker Revision Except Device Replacement with CC
262 — Cardiac Pacemaker Revision Except Device Replacement without CC/MCC
264 — Other Circulatory System O.R. Procedures
466 — Revision of Hip or Knee Replacement with MCC
467 — Revision of Hip or Knee Replacement with CC
468 — Revision of Hip or Knee Replacement without CC/MCC
485 — Knee Procedures with Principal Diagnosis of Infection with MCC
486 — Knee Procedures with Principal Diagnosis of Infection with CC
487 — Knee Procedures with Principal Diagnosis of Infection without CC/MCC
736 — Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with MCC
737 — Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with CC
738 — Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy without CC/MCC
739 — Uterine and Adnexa Procedures for Non-Ovarian and Non-Adnexal Malignancy with MCC
740 — Uterine and Adnexa Procedures for Non-Ovarian and Non-Adnexal Malignancy with CC
741 — Uterine and Adnexa Procedures for Non-Ovarian and Non-Adnexal Malignancy without CC/MCC

DRG titles revised (22)

008 — Simultaneous Pancreas, Islet Cell and Kidney Transplant
Previously: Simultaneous Pancreas and Kidney Transplant
010 — Pancreas or Islet Cell Transplant
Previously: Pancreas Transplant
019 — Simultaneous Pancreas, Islet Cell and Kidney Transplant with Hemodialysis
Previously: Simultaneous Pancreas and Kidney Transplant with Hemodialysis
426 — Multiple Level Combined Anterior and Posterior Spinal Fusion Except Cervical with MCC
Previously: Multiple Level Combined Anterior and Posterior Spinal Fusion Except Cervical with MCC or Custom-Made Anatomically Designed Interbody Fusion Device
447 — Multiple Level Spinal Fusion Except Cervical with MCC
Previously: Multiple Level Spinal Fusion Except Cervical with MCC or Custom-Made Anatomically Designed Interbody Fusion Device
450 — Single Level Spinal Fusion Except Cervical with MCC
Previously: Single Level Spinal Fusion Except Cervical with MCC or Custom-Made Anatomically Designed Interbody Fusion Device
456 — Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with MCC
Previously: Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, Infection or Extensive Fusions with MCC
457 — Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection with CC
Previously: Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, Infection or Extensive Fusions with CC
458 — Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, or Infection without CC/MCC
Previously: Spinal Fusion Except Cervical with Spinal Curvature, Malignancy, Infection or Extensive Fusions without CC/MCC
463 — Wound Debridement or Skin Graft Except Hand for Musculoskeletal and Connective Tissue Disorders with MCC or Insertion of Antibiotic-eluting Bone Void Filler
Previously: Wound Debridement and Skin Graft Except Hand for Musculoskeletal and Connective Tissue Disorders with MCC
464 — Wound Debridement or Skin Graft Except Hand for Musculoskeletal and Connective Tissue Disorders with CC
Previously: Wound Debridement and Skin Graft Except Hand for Musculoskeletal and Connective Tissue Disorders with CC
465 — Wound Debridement or Skin Graft Except Hand for Musculoskeletal and Connective Tissue Disorders without CC/MCC
Previously: Wound Debridement and Skin Graft Except Hand for Musculoskeletal and Connective Tissue Disorders without CC/MCC
474 — Amputation for Musculoskeletal System and Connective Tissue Disorders with MCC or Insertion of Antibiotic-eluting Bone Void Filler
Previously: Amputation for Musculoskeletal System and Connective Tissue Disorders with MCC
477 — Biopsies of Musculoskeletal System and Connective Tissue with MCC or Insertion of Antibiotic-eluting Bone Void Filler
Previously: Biopsies of Musculoskeletal System and Connective Tissue with MCC
480 — Hip and Femur Procedures Except Major Joint with MCC or Insertion of Antibiotic-eluting Bone Void Filler
Previously: Hip and Femur Procedures Except Major Joint with MCC
492 — Lower Extremity and Humerus Procedures Except Hip, Foot and Femur with MCC or Insertion of Antibiotic-eluting Bone Void Filler
Previously: Lower Extremity and Humerus Procedures Except Hip, Foot and Femur with MCC
616 — Amputation of Lower Limb for Endocrine, Nutritional and Metabolic Disorders with MCC or Insertion of Antibiotic-eluting Bone Void Filler
Previously: Amputation of Lower Limb for Endocrine, Nutritional and Metabolic Disorders with MCC
628 — Other Endocrine, Nutritional and Metabolic O.R. Procedures with MCC or Insertion of Antibiotic-eluting Bone Void Filler
Previously: Other Endocrine, Nutritional and Metabolic O.R. Procedures with MCC
715 — Male Reproductive System and Other O.R. Procedures for Malignancy with CC/MCC
Previously: Other Male Reproductive System O.R. Procedures for Malignancy with CC/MCC
716 — Male Reproductive System and Other O.R. Procedures for Malignancy without CC/MCC
Previously: Other Male Reproductive System O.R. Procedures for Malignancy without CC/MCC
717 — Other Male Reproductive System O.R. Procedures with CC/MCC
Previously: Other Male Reproductive System O.R. Procedures Except Malignancy with CC/MCC
718 — Other Male Reproductive System O.R. Procedures without CC/MCC
Previously: Other Male Reproductive System O.R. Procedures Except Malignancy without CC/MCC

Source: DRG titles in the CMS MS-DRG grouper software package (V44), which carries every version from v40 on.

Source data

Source organization: CMS
Source release: MS-DRG grouper v44
Source file: msdrg_combined.bin (grouper package V440)
File checksum (SHA-256): 6660296839168f8df03ff39e590bae350fe57e15ebf89b82509b2399b694e3b1
Data read date: Data not available in the current MedCoder release record.
Effective date: October 1, 2026
Release type: Annual grouper version, effective October 1, with mid-year versions
Methodology: DRG numbers and titles in grouper v44 are compared with v43.1. Changes to which codes group to a DRG are not recorded here.

These changes are based on recorded release data. MedCoder does not generate coding changes with AI.

All releases in the Change Ledger