MS-DRG · FY 2027 v44.0

MS-DRG 525 – Extensive or Complex Spinal Fusion Procedures Except Cervical without CC/MCC

A Surgical DRG in MDC 08 (Diseases & Disorders of the Musculoskeletal System & Connective Tissue). Inpatient cases group to DRG 525 when one of the 61 ICD-10-PCS operating-room procedures listed below is reported. Its FY 2027 relative weight is 7.2950 with a geometric mean length of stay of 3.2 days.

Surgical DRG – assigned by operating-room procedure✓ Official CMS v44.0 dataset
7.2950
Relative Weight
3.2
Geometric Mean LOS (days)
3.8
Arithmetic Mean LOS (days)
61
Procedure Codes

Severity family

DRG 523with MCCWeight 13.7383 · GMLOS 9.2 daysDRG 524with CCWeight 9.8322 · GMLOS 5.6 daysDRG 525without CC/MCCWeight 7.2950 · GMLOS 3.2 days
How a case is assigned to DRG 525

The grouper first assigns the case to MDC 08 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 → 523; with CC → 524; without CC/MCC → 525.

ICD-10-PCS

Procedure Codes 61 codes · 7 categories

61 of 61 shown
0RG8 Upper Joints, Fusion33 codes
  • 0RG8070 Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Anterior Approach, Anterior Column, Open Approach
  • 0RG8071 Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Posterior Approach, Posterior Column, Open Approach
  • 0RG807J Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Posterior Approach, Anterior Column, Open Approach
  • 0RG80A0 Fusion of 8 or more Thoracic Vertebral Joints with Interbody Fusion Device, Anterior Approach, Anterior Column, Open Approach
  • 0RG80AJ Fusion of 8 or more Thoracic Vertebral Joints with Interbody Fusion Device, Posterior Approach, Anterior Column, Open Approach
  • 0RG80J0 Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Anterior Approach, Anterior Column, Open Approach
  • 0RG80J1 Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Posterior Approach, Posterior Column, Open Approach
  • 0RG80JJ Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Posterior Approach, Anterior Column, Open Approach
  • 0RG80K0 Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Anterior Approach, Anterior Column, Open Approach
  • 0RG80K1 Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Posterior Approach, Posterior Column, Open Approach
  • 0RG80KJ Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Posterior Approach, Anterior Column, Open Approach
  • 0RG8370 Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0RG8371 Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Posterior Approach, Posterior Column, Percutaneous Approach
  • 0RG837J Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0RG83A0 Fusion of 8 or more Thoracic Vertebral Joints with Interbody Fusion Device, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0RG83AJ Fusion of 8 or more Thoracic Vertebral Joints with Interbody Fusion Device, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0RG83J0 Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0RG83J1 Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Posterior Approach, Posterior Column, Percutaneous Approach
  • 0RG83JJ Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0RG83K0 Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0RG83K1 Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Posterior Approach, Posterior Column, Percutaneous Approach
  • 0RG83KJ Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0RG8470 Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RG8471 Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Posterior Approach, Posterior Column, Percutaneous Endoscopic Approach
  • 0RG847J Fusion of 8 or more Thoracic Vertebral Joints with Autologous Tissue Substitute, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RG84A0 Fusion of 8 or more Thoracic Vertebral Joints with Interbody Fusion Device, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RG84AJ Fusion of 8 or more Thoracic Vertebral Joints with Interbody Fusion Device, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RG84J0 Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RG84J1 Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Posterior Approach, Posterior Column, Percutaneous Endoscopic Approach
  • 0RG84JJ Fusion of 8 or more Thoracic Vertebral Joints with Synthetic Substitute, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RG84K0 Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RG84K1 Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Posterior Approach, Posterior Column, Percutaneous Endoscopic Approach
  • 0RG84KJ Fusion of 8 or more Thoracic Vertebral Joints with Nonautologous Tissue Substitute, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
0RGA Upper Joints, Fusion6 codes
  • 0RGA0E0 Fusion of Thoracolumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Open Approach
  • 0RGA0EJ Fusion of Thoracolumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Open Approach
  • 0RGA3E0 Fusion of Thoracolumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0RGA3EJ Fusion of Thoracolumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0RGA4E0 Fusion of Thoracolumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0RGA4EJ Fusion of Thoracolumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
0SG0 Lower Joints, Fusion6 codes
  • 0SG00E0 Fusion of Lumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Open Approach
  • 0SG00EJ Fusion of Lumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Open Approach
  • 0SG03E0 Fusion of Lumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0SG03EJ Fusion of Lumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0SG04E0 Fusion of Lumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0SG04EJ Fusion of Lumbar Vertebral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
0SG1 Lower Joints, Fusion6 codes
  • 0SG10E0 Fusion of 2 or more Lumbar Vertebral Joints with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Open Approach
  • 0SG10EJ Fusion of 2 or more Lumbar Vertebral Joints with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Open Approach
  • 0SG13E0 Fusion of 2 or more Lumbar Vertebral Joints with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0SG13EJ Fusion of 2 or more Lumbar Vertebral Joints with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0SG14E0 Fusion of 2 or more Lumbar Vertebral Joints with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0SG14EJ Fusion of 2 or more Lumbar Vertebral Joints with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
0SG3 Lower Joints, Fusion6 codes
  • 0SG30E0 Fusion of Lumbosacral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Open Approach
  • 0SG30EJ Fusion of Lumbosacral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Open Approach
  • 0SG33E0 Fusion of Lumbosacral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Approach
  • 0SG33EJ Fusion of Lumbosacral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Approach
  • 0SG34E0 Fusion of Lumbosacral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Anterior Approach, Anterior Column, Percutaneous Endoscopic Approach
  • 0SG34EJ Fusion of Lumbosacral Joint with Interbody Fusion Device, Custom-Made Anatomically and Virtually Designed, Posterior Approach, Anterior Column, Percutaneous Endoscopic Approach
XRGE New Technology, Joints, Fusion2 codes
  • XRGE058 Fusion of Right Sacroiliac Joint using Internal Fixation Device with Tulip Connector, Open Approach, New Technology Group 8
  • XRGE358 Fusion of Right Sacroiliac Joint using Internal Fixation Device with Tulip Connector, Percutaneous Approach, New Technology Group 8
XRGF New Technology, Joints, Fusion2 codes
  • XRGF058 Fusion of Left Sacroiliac Joint using Internal Fixation Device with Tulip Connector, Open Approach, New Technology Group 8
  • XRGF358 Fusion of Left Sacroiliac Joint using Internal Fixation Device with Tulip Connector, Percutaneous Approach, New Technology Group 8
ICD-10-CM

Qualifying Diagnosis Codes

Diagnosis codes do not drive assignment for this DRG. Cases group here from the ICD-10-PCS procedure list below.

Frequently Asked Questions

What is MS-DRG 525?

MS-DRG 525 (Extensive or Complex Spinal Fusion Procedures Except Cervical without CC/MCC) is a surgical DRG in MDC 08 (Diseases & Disorders of the Musculoskeletal System & Connective Tissue). Its FY 2027 relative weight is 7.2950 with a geometric mean length of stay of 3.2 days.

What is the difference between DRG 523, 524, 525?

All 3 share the same base category; the severity of secondary diagnoses separates them: 523 (with MCC), 524 (with CC), 525 (without CC/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 525?

61 ICD-10-PCS operating-room procedure codes group to this DRG.

What is the relative weight of DRG 525?

The FY 2027 relative weight of this DRG is 7.2950, meaning reimbursement of roughly 7.30 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 524 – Extensive or Complex Spinal Fusion Procedures Except
Source: CMS ICD-10 MS-DRG v44.0 Definitions Manual and the FY 2027 IPPS Final Rule (Table 5), effective October 1, 2026 through September 30, 2027. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.