MS-DRG · FY 2026 v43.0

MS-DRG 489 – Knee Procedures without Principal Diagnosis of Infection without CC/MCC

A Surgical DRG in MDC 08 (Diseases & Disorders of the Musculoskeletal System & Connective Tissue). Inpatient cases group to DRG 489 when one of the 278 ICD-10-PCS operating-room procedures listed below is reported. Its FY 2026 relative weight is 1.1168 with a geometric mean length of stay of 1.2 days.

Surgical DRG – assigned by operating-room procedure✓ Official CMS v43.0 dataset

1.1168

Relative Weight

1.2

Geometric Mean LOS (days)

1.4

Arithmetic Mean LOS (days)

278

Procedure Codes

Severity family

DRG 488with CC/MCCWeight 1.5236 · GMLOS 2.2 daysDRG 489without CC/MCCWeight 1.1168 · GMLOS 1.2 days

How a case is assigned to DRG 489

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 CC/MCC → 488; without CC/MCC → 489.

ICD-10-PCS

Procedure Codes 278 codes · 54 categories

278 of 278 shown

0M9N Bursae and Ligaments, Drainage1 code

0M9N40Z Drainage of Right Knee Bursa and Ligament with Drainage Device, Percutaneous Endoscopic Approach

0M9P Bursae and Ligaments, Drainage1 code

0M9P40Z Drainage of Left Knee Bursa and Ligament with Drainage Device, Percutaneous Endoscopic Approach

0MQN Bursae and Ligaments, Repair3 codes

0MQN0ZZ Repair Right Knee Bursa and Ligament, Open Approach
0MQN3ZZ Repair Right Knee Bursa and Ligament, Percutaneous Approach
0MQN4ZZ Repair Right Knee Bursa and Ligament, Percutaneous Endoscopic Approach

0MQP Bursae and Ligaments, Repair3 codes

0MQP0ZZ Repair Left Knee Bursa and Ligament, Open Approach
0MQP3ZZ Repair Left Knee Bursa and Ligament, Percutaneous Approach
0MQP4ZZ Repair Left Knee Bursa and Ligament, Percutaneous Endoscopic Approach

0MRN Bursae and Ligaments, Replacement6 codes

0MRN07Z Replacement of Right Knee Bursa and Ligament with Autologous Tissue Substitute, Open Approach
0MRN0JZ Replacement of Right Knee Bursa and Ligament with Synthetic Substitute, Open Approach
0MRN0KZ Replacement of Right Knee Bursa and Ligament with Nonautologous Tissue Substitute, Open Approach
0MRN47Z Replacement of Right Knee Bursa and Ligament with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0MRN4JZ Replacement of Right Knee Bursa and Ligament with Synthetic Substitute, Percutaneous Endoscopic Approach
0MRN4KZ Replacement of Right Knee Bursa and Ligament with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0MRP Bursae and Ligaments, Replacement6 codes

0MRP07Z Replacement of Left Knee Bursa and Ligament with Autologous Tissue Substitute, Open Approach
0MRP0JZ Replacement of Left Knee Bursa and Ligament with Synthetic Substitute, Open Approach
0MRP0KZ Replacement of Left Knee Bursa and Ligament with Nonautologous Tissue Substitute, Open Approach
0MRP47Z Replacement of Left Knee Bursa and Ligament with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0MRP4JZ Replacement of Left Knee Bursa and Ligament with Synthetic Substitute, Percutaneous Endoscopic Approach
0MRP4KZ Replacement of Left Knee Bursa and Ligament with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0Q8D Lower Bones, Division3 codes

0Q8D0ZZ Division of Right Patella, Open Approach
0Q8D3ZZ Division of Right Patella, Percutaneous Approach
0Q8D4ZZ Division of Right Patella, Percutaneous Endoscopic Approach

0Q8F Lower Bones, Division3 codes

0Q8F0ZZ Division of Left Patella, Open Approach
0Q8F3ZZ Division of Left Patella, Percutaneous Approach
0Q8F4ZZ Division of Left Patella, Percutaneous Endoscopic Approach

0QBD Lower Bones, Excision3 codes

0QBD0ZZ Excision of Right Patella, Open Approach
0QBD3ZZ Excision of Right Patella, Percutaneous Approach
0QBD4ZZ Excision of Right Patella, Percutaneous Endoscopic Approach

0QBF Lower Bones, Excision3 codes

0QBF0ZZ Excision of Left Patella, Open Approach
0QBF3ZZ Excision of Left Patella, Percutaneous Approach
0QBF4ZZ Excision of Left Patella, Percutaneous Endoscopic Approach

0QCD Lower Bones, Extirpation3 codes

0QCD0ZZ Extirpation of Matter from Right Patella, Open Approach
0QCD3ZZ Extirpation of Matter from Right Patella, Percutaneous Approach
0QCD4ZZ Extirpation of Matter from Right Patella, Percutaneous Endoscopic Approach

0QCF Lower Bones, Extirpation3 codes

0QCF0ZZ Extirpation of Matter from Left Patella, Open Approach
0QCF3ZZ Extirpation of Matter from Left Patella, Percutaneous Approach
0QCF4ZZ Extirpation of Matter from Left Patella, Percutaneous Endoscopic Approach

0QHD Lower Bones, Insertion6 codes

0QHD04Z Insertion of Internal Fixation Device into Right Patella, Open Approach
0QHD05Z Insertion of External Fixation Device into Right Patella, Open Approach
0QHD34Z Insertion of Internal Fixation Device into Right Patella, Percutaneous Approach
0QHD35Z Insertion of External Fixation Device into Right Patella, Percutaneous Approach
0QHD44Z Insertion of Internal Fixation Device into Right Patella, Percutaneous Endoscopic Approach
0QHD45Z Insertion of External Fixation Device into Right Patella, Percutaneous Endoscopic Approach

0QHF Lower Bones, Insertion6 codes

0QHF04Z Insertion of Internal Fixation Device into Left Patella, Open Approach
0QHF05Z Insertion of External Fixation Device into Left Patella, Open Approach
0QHF34Z Insertion of Internal Fixation Device into Left Patella, Percutaneous Approach
0QHF35Z Insertion of External Fixation Device into Left Patella, Percutaneous Approach
0QHF44Z Insertion of Internal Fixation Device into Left Patella, Percutaneous Endoscopic Approach
0QHF45Z Insertion of External Fixation Device into Left Patella, Percutaneous Endoscopic Approach

0QND Lower Bones, Release3 codes

0QND0ZZ Release Right Patella, Open Approach
0QND3ZZ Release Right Patella, Percutaneous Approach
0QND4ZZ Release Right Patella, Percutaneous Endoscopic Approach

0QNF Lower Bones, Release3 codes

0QNF0ZZ Release Left Patella, Open Approach
0QNF3ZZ Release Left Patella, Percutaneous Approach
0QNF4ZZ Release Left Patella, Percutaneous Endoscopic Approach

0QQD Lower Bones, Repair2 codes

0QQD0ZZ Repair Right Patella, Open Approach
0QQD4ZZ Repair Right Patella, Percutaneous Endoscopic Approach

0QQF Lower Bones, Repair2 codes

0QQF0ZZ Repair Left Patella, Open Approach
0QQF4ZZ Repair Left Patella, Percutaneous Endoscopic Approach

0QRD Lower Bones, Replacement9 codes

0QRD07Z Replacement of Right Patella with Autologous Tissue Substitute, Open Approach
0QRD0JZ Replacement of Right Patella with Synthetic Substitute, Open Approach
0QRD0KZ Replacement of Right Patella with Nonautologous Tissue Substitute, Open Approach
0QRD37Z Replacement of Right Patella with Autologous Tissue Substitute, Percutaneous Approach
0QRD3JZ Replacement of Right Patella with Synthetic Substitute, Percutaneous Approach
0QRD3KZ Replacement of Right Patella with Nonautologous Tissue Substitute, Percutaneous Approach
0QRD47Z Replacement of Right Patella with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0QRD4JZ Replacement of Right Patella with Synthetic Substitute, Percutaneous Endoscopic Approach
0QRD4KZ Replacement of Right Patella with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0QRF Lower Bones, Replacement9 codes

0QRF07Z Replacement of Left Patella with Autologous Tissue Substitute, Open Approach
0QRF0JZ Replacement of Left Patella with Synthetic Substitute, Open Approach
0QRF0KZ Replacement of Left Patella with Nonautologous Tissue Substitute, Open Approach
0QRF37Z Replacement of Left Patella with Autologous Tissue Substitute, Percutaneous Approach
0QRF3JZ Replacement of Left Patella with Synthetic Substitute, Percutaneous Approach
0QRF3KZ Replacement of Left Patella with Nonautologous Tissue Substitute, Percutaneous Approach
0QRF47Z Replacement of Left Patella with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0QRF4JZ Replacement of Left Patella with Synthetic Substitute, Percutaneous Endoscopic Approach
0QRF4KZ Replacement of Left Patella with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0QSD Lower Bones, Reposition3 codes

0QSD05Z Reposition Right Patella with External Fixation Device, Open Approach
0QSD35Z Reposition Right Patella with External Fixation Device, Percutaneous Approach
0QSD45Z Reposition Right Patella with External Fixation Device, Percutaneous Endoscopic Approach

0QSF Lower Bones, Reposition3 codes

0QSF05Z Reposition Left Patella with External Fixation Device, Open Approach
0QSF35Z Reposition Left Patella with External Fixation Device, Percutaneous Approach
0QSF45Z Reposition Left Patella with External Fixation Device, Percutaneous Endoscopic Approach

0QTD Lower Bones, Resection1 code

0QTD0ZZ Resection of Right Patella, Open Approach

0QTF Lower Bones, Resection1 code

0QTF0ZZ Resection of Left Patella, Open Approach

0QUD Lower Bones, Supplement9 codes

0QUD07Z Supplement Right Patella with Autologous Tissue Substitute, Open Approach
0QUD0JZ Supplement Right Patella with Synthetic Substitute, Open Approach
0QUD0KZ Supplement Right Patella with Nonautologous Tissue Substitute, Open Approach
0QUD37Z Supplement Right Patella with Autologous Tissue Substitute, Percutaneous Approach
0QUD3JZ Supplement Right Patella with Synthetic Substitute, Percutaneous Approach
0QUD3KZ Supplement Right Patella with Nonautologous Tissue Substitute, Percutaneous Approach
0QUD47Z Supplement Right Patella with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0QUD4JZ Supplement Right Patella with Synthetic Substitute, Percutaneous Endoscopic Approach
0QUD4KZ Supplement Right Patella with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0QUF Lower Bones, Supplement9 codes

0QUF07Z Supplement Left Patella with Autologous Tissue Substitute, Open Approach
0QUF0JZ Supplement Left Patella with Synthetic Substitute, Open Approach
0QUF0KZ Supplement Left Patella with Nonautologous Tissue Substitute, Open Approach
0QUF37Z Supplement Left Patella with Autologous Tissue Substitute, Percutaneous Approach
0QUF3JZ Supplement Left Patella with Synthetic Substitute, Percutaneous Approach
0QUF3KZ Supplement Left Patella with Nonautologous Tissue Substitute, Percutaneous Approach
0QUF47Z Supplement Left Patella with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0QUF4JZ Supplement Left Patella with Synthetic Substitute, Percutaneous Endoscopic Approach
0QUF4KZ Supplement Left Patella with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0S9C Lower Joints, Drainage2 codes

0S9C00Z Drainage of Right Knee Joint with Drainage Device, Open Approach
0S9C0ZZ Drainage of Right Knee Joint, Open Approach

0S9D Lower Joints, Drainage2 codes

0S9D00Z Drainage of Left Knee Joint with Drainage Device, Open Approach
0S9D0ZZ Drainage of Left Knee Joint, Open Approach

0SBC Lower Joints, Excision3 codes

0SBC0ZZ Excision of Right Knee Joint, Open Approach
0SBC3ZZ Excision of Right Knee Joint, Percutaneous Approach
0SBC4ZZ Excision of Right Knee Joint, Percutaneous Endoscopic Approach

0SBD Lower Joints, Excision3 codes

0SBD0ZZ Excision of Left Knee Joint, Open Approach
0SBD3ZZ Excision of Left Knee Joint, Percutaneous Approach
0SBD4ZZ Excision of Left Knee Joint, Percutaneous Endoscopic Approach

0SCC Lower Joints, Extirpation3 codes

0SCC0ZZ Extirpation of Matter from Right Knee Joint, Open Approach
0SCC3ZZ Extirpation of Matter from Right Knee Joint, Percutaneous Approach
0SCC4ZZ Extirpation of Matter from Right Knee Joint, Percutaneous Endoscopic Approach

0SCD Lower Joints, Extirpation3 codes

0SCD0ZZ Extirpation of Matter from Left Knee Joint, Open Approach
0SCD3ZZ Extirpation of Matter from Left Knee Joint, Percutaneous Approach
0SCD4ZZ Extirpation of Matter from Left Knee Joint, Percutaneous Endoscopic Approach

0SGC Lower Joints, Fusion18 codes

0SGC03Z Fusion of Right Knee Joint with Sustained Compression Internal Fixation Device, Open Approach
0SGC04Z Fusion of Right Knee Joint with Internal Fixation Device, Open Approach
0SGC05Z Fusion of Right Knee Joint with External Fixation Device, Open Approach
0SGC07Z Fusion of Right Knee Joint with Autologous Tissue Substitute, Open Approach
0SGC0JZ Fusion of Right Knee Joint with Synthetic Substitute, Open Approach
0SGC0KZ Fusion of Right Knee Joint with Nonautologous Tissue Substitute, Open Approach
0SGC33Z Fusion of Right Knee Joint with Sustained Compression Internal Fixation Device, Percutaneous Approach
0SGC34Z Fusion of Right Knee Joint with Internal Fixation Device, Percutaneous Approach
0SGC35Z Fusion of Right Knee Joint with External Fixation Device, Percutaneous Approach
0SGC37Z Fusion of Right Knee Joint with Autologous Tissue Substitute, Percutaneous Approach
0SGC3JZ Fusion of Right Knee Joint with Synthetic Substitute, Percutaneous Approach
0SGC3KZ Fusion of Right Knee Joint with Nonautologous Tissue Substitute, Percutaneous Approach
0SGC43Z Fusion of Right Knee Joint with Sustained Compression Internal Fixation Device, Percutaneous Endoscopic Approach
0SGC44Z Fusion of Right Knee Joint with Internal Fixation Device, Percutaneous Endoscopic Approach
0SGC45Z Fusion of Right Knee Joint with External Fixation Device, Percutaneous Endoscopic Approach
0SGC47Z Fusion of Right Knee Joint with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0SGC4JZ Fusion of Right Knee Joint with Synthetic Substitute, Percutaneous Endoscopic Approach
0SGC4KZ Fusion of Right Knee Joint with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0SGD Lower Joints, Fusion18 codes

0SGD03Z Fusion of Left Knee Joint with Sustained Compression Internal Fixation Device, Open Approach
0SGD04Z Fusion of Left Knee Joint with Internal Fixation Device, Open Approach
0SGD05Z Fusion of Left Knee Joint with External Fixation Device, Open Approach
0SGD07Z Fusion of Left Knee Joint with Autologous Tissue Substitute, Open Approach
0SGD0JZ Fusion of Left Knee Joint with Synthetic Substitute, Open Approach
0SGD0KZ Fusion of Left Knee Joint with Nonautologous Tissue Substitute, Open Approach
0SGD33Z Fusion of Left Knee Joint with Sustained Compression Internal Fixation Device, Percutaneous Approach
0SGD34Z Fusion of Left Knee Joint with Internal Fixation Device, Percutaneous Approach
0SGD35Z Fusion of Left Knee Joint with External Fixation Device, Percutaneous Approach
0SGD37Z Fusion of Left Knee Joint with Autologous Tissue Substitute, Percutaneous Approach
0SGD3JZ Fusion of Left Knee Joint with Synthetic Substitute, Percutaneous Approach
0SGD3KZ Fusion of Left Knee Joint with Nonautologous Tissue Substitute, Percutaneous Approach
0SGD43Z Fusion of Left Knee Joint with Sustained Compression Internal Fixation Device, Percutaneous Endoscopic Approach
0SGD44Z Fusion of Left Knee Joint with Internal Fixation Device, Percutaneous Endoscopic Approach
0SGD45Z Fusion of Left Knee Joint with External Fixation Device, Percutaneous Endoscopic Approach
0SGD47Z Fusion of Left Knee Joint with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
0SGD4JZ Fusion of Left Knee Joint with Synthetic Substitute, Percutaneous Endoscopic Approach
0SGD4KZ Fusion of Left Knee Joint with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

0SHC Lower Joints, Insertion7 codes

0SHC04Z Insertion of Internal Fixation Device into Right Knee Joint, Open Approach
0SHC05Z Insertion of External Fixation Device into Right Knee Joint, Open Approach
0SHC08Z Insertion of Spacer into Right Knee Joint, Open Approach
0SHC34Z Insertion of Internal Fixation Device into Right Knee Joint, Percutaneous Approach
0SHC35Z Insertion of External Fixation Device into Right Knee Joint, Percutaneous Approach
0SHC44Z Insertion of Internal Fixation Device into Right Knee Joint, Percutaneous Endoscopic Approach
0SHC45Z Insertion of External Fixation Device into Right Knee Joint, Percutaneous Endoscopic Approach

0SHD Lower Joints, Insertion7 codes

0SHD04Z Insertion of Internal Fixation Device into Left Knee Joint, Open Approach
0SHD05Z Insertion of External Fixation Device into Left Knee Joint, Open Approach
0SHD08Z Insertion of Spacer into Left Knee Joint, Open Approach
0SHD34Z Insertion of Internal Fixation Device into Left Knee Joint, Percutaneous Approach
0SHD35Z Insertion of External Fixation Device into Left Knee Joint, Percutaneous Approach
0SHD44Z Insertion of Internal Fixation Device into Left Knee Joint, Percutaneous Endoscopic Approach
0SHD45Z Insertion of External Fixation Device into Left Knee Joint, Percutaneous Endoscopic Approach

0SJC Lower Joints, Inspection1 code

0SJC0ZZ Inspection of Right Knee Joint, Open Approach

0SJD Lower Joints, Inspection1 code

0SJD0ZZ Inspection of Left Knee Joint, Open Approach

0SNC Lower Joints, Release3 codes

0SNC0ZZ Release Right Knee Joint, Open Approach
0SNC3ZZ Release Right Knee Joint, Percutaneous Approach
0SNC4ZZ Release Right Knee Joint, Percutaneous Endoscopic Approach

0SND Lower Joints, Release3 codes

0SND0ZZ Release Left Knee Joint, Open Approach
0SND3ZZ Release Left Knee Joint, Percutaneous Approach
0SND4ZZ Release Left Knee Joint, Percutaneous Endoscopic Approach

0SPC Lower Joints, Removal19 codes

0SPC00Z Removal of Drainage Device from Right Knee Joint, Open Approach
0SPC03Z Removal of Infusion Device from Right Knee Joint, Open Approach
0SPC04Z Removal of Internal Fixation Device from Right Knee Joint, Open Approach
0SPC05Z Removal of External Fixation Device from Right Knee Joint, Open Approach
0SPC07Z Removal of Autologous Tissue Substitute from Right Knee Joint, Open Approach
0SPC08Z Removal of Spacer from Right Knee Joint, Open Approach
0SPC09Z Removal of Liner from Right Knee Joint, Open Approach
0SPC0EZ Removal of Articulating Spacer from Right Knee Joint, Open Approach
0SPC0KZ Removal of Nonautologous Tissue Substitute from Right Knee Joint, Open Approach
0SPC34Z Removal of Internal Fixation Device from Right Knee Joint, Percutaneous Approach
0SPC35Z Removal of External Fixation Device from Right Knee Joint, Percutaneous Approach
0SPC37Z Removal of Autologous Tissue Substitute from Right Knee Joint, Percutaneous Approach
0SPC3KZ Removal of Nonautologous Tissue Substitute from Right Knee Joint, Percutaneous Approach
0SPC40Z Removal of Drainage Device from Right Knee Joint, Percutaneous Endoscopic Approach
0SPC43Z Removal of Infusion Device from Right Knee Joint, Percutaneous Endoscopic Approach
0SPC44Z Removal of Internal Fixation Device from Right Knee Joint, Percutaneous Endoscopic Approach
0SPC45Z Removal of External Fixation Device from Right Knee Joint, Percutaneous Endoscopic Approach
0SPC47Z Removal of Autologous Tissue Substitute from Right Knee Joint, Percutaneous Endoscopic Approach
0SPC4KZ Removal of Nonautologous Tissue Substitute from Right Knee Joint, Percutaneous Endoscopic Approach

0SPD Lower Joints, Removal19 codes

0SPD00Z Removal of Drainage Device from Left Knee Joint, Open Approach
0SPD03Z Removal of Infusion Device from Left Knee Joint, Open Approach
0SPD04Z Removal of Internal Fixation Device from Left Knee Joint, Open Approach
0SPD05Z Removal of External Fixation Device from Left Knee Joint, Open Approach
0SPD07Z Removal of Autologous Tissue Substitute from Left Knee Joint, Open Approach
0SPD08Z Removal of Spacer from Left Knee Joint, Open Approach
0SPD09Z Removal of Liner from Left Knee Joint, Open Approach
0SPD0EZ Removal of Articulating Spacer from Left Knee Joint, Open Approach
0SPD0KZ Removal of Nonautologous Tissue Substitute from Left Knee Joint, Open Approach
0SPD34Z Removal of Internal Fixation Device from Left Knee Joint, Percutaneous Approach
0SPD35Z Removal of External Fixation Device from Left Knee Joint, Percutaneous Approach
0SPD37Z Removal of Autologous Tissue Substitute from Left Knee Joint, Percutaneous Approach
0SPD3KZ Removal of Nonautologous Tissue Substitute from Left Knee Joint, Percutaneous Approach
0SPD40Z Removal of Drainage Device from Left Knee Joint, Percutaneous Endoscopic Approach
0SPD43Z Removal of Infusion Device from Left Knee Joint, Percutaneous Endoscopic Approach
0SPD44Z Removal of Internal Fixation Device from Left Knee Joint, Percutaneous Endoscopic Approach
0SPD45Z Removal of External Fixation Device from Left Knee Joint, Percutaneous Endoscopic Approach
0SPD47Z Removal of Autologous Tissue Substitute from Left Knee Joint, Percutaneous Endoscopic Approach
0SPD4KZ Removal of Nonautologous Tissue Substitute from Left Knee Joint, Percutaneous Endoscopic Approach

0SQC Lower Joints, Repair3 codes

0SQC0ZZ Repair Right Knee Joint, Open Approach
0SQC3ZZ Repair Right Knee Joint, Percutaneous Approach
0SQC4ZZ Repair Right Knee Joint, Percutaneous Endoscopic Approach

0SQD Lower Joints, Repair3 codes

0SQD0ZZ Repair Left Knee Joint, Open Approach
0SQD3ZZ Repair Left Knee Joint, Percutaneous Approach
0SQD4ZZ Repair Left Knee Joint, Percutaneous Endoscopic Approach

0SRC Lower Joints, Replacement1 code

0SRC0EZ Replacement of Right Knee Joint with Articulating Spacer, Open Approach

0SRD Lower Joints, Replacement1 code

0SRD0EZ Replacement of Left Knee Joint with Articulating Spacer, Open Approach

0SSC Lower Joints, Reposition3 codes

0SSC04Z Reposition Right Knee Joint with Internal Fixation Device, Open Approach
0SSC05Z Reposition Right Knee Joint with External Fixation Device, Open Approach
0SSC0ZZ Reposition Right Knee Joint, Open Approach

0SSD Lower Joints, Reposition3 codes

0SSD04Z Reposition Left Knee Joint with Internal Fixation Device, Open Approach
0SSD05Z Reposition Left Knee Joint with External Fixation Device, Open Approach
0SSD0ZZ Reposition Left Knee Joint, Open Approach

0STC Lower Joints, Resection1 code

0STC0ZZ Resection of Right Knee Joint, Open Approach

0STD Lower Joints, Resection1 code

0STD0ZZ Resection of Left Knee Joint, Open Approach

0SUV Lower Joints, Supplement1 code

0SUV09Z Supplement Right Knee Joint, Tibial Surface with Liner, Open Approach

0SUW Lower Joints, Supplement1 code

0SUW09Z Supplement Left Knee Joint, Tibial Surface with Liner, Open Approach

0SWC Lower Joints, Revision22 codes

0SWC00Z Revision of Drainage Device in Right Knee Joint, Open Approach
0SWC03Z Revision of Infusion Device in Right Knee Joint, Open Approach
0SWC04Z Revision of Internal Fixation Device in Right Knee Joint, Open Approach
0SWC05Z Revision of External Fixation Device in Right Knee Joint, Open Approach
0SWC07Z Revision of Autologous Tissue Substitute in Right Knee Joint, Open Approach
0SWC08Z Revision of Spacer in Right Knee Joint, Open Approach
0SWC09Z Revision of Liner in Right Knee Joint, Open Approach
0SWC0KZ Revision of Nonautologous Tissue Substitute in Right Knee Joint, Open Approach
0SWC30Z Revision of Drainage Device in Right Knee Joint, Percutaneous Approach
0SWC33Z Revision of Infusion Device in Right Knee Joint, Percutaneous Approach
0SWC34Z Revision of Internal Fixation Device in Right Knee Joint, Percutaneous Approach
0SWC35Z Revision of External Fixation Device in Right Knee Joint, Percutaneous Approach
0SWC37Z Revision of Autologous Tissue Substitute in Right Knee Joint, Percutaneous Approach
0SWC38Z Revision of Spacer in Right Knee Joint, Percutaneous Approach
0SWC3KZ Revision of Nonautologous Tissue Substitute in Right Knee Joint, Percutaneous Approach
0SWC40Z Revision of Drainage Device in Right Knee Joint, Percutaneous Endoscopic Approach
0SWC43Z Revision of Infusion Device in Right Knee Joint, Percutaneous Endoscopic Approach
0SWC44Z Revision of Internal Fixation Device in Right Knee Joint, Percutaneous Endoscopic Approach
0SWC45Z Revision of External Fixation Device in Right Knee Joint, Percutaneous Endoscopic Approach
0SWC47Z Revision of Autologous Tissue Substitute in Right Knee Joint, Percutaneous Endoscopic Approach
0SWC48Z Revision of Spacer in Right Knee Joint, Percutaneous Endoscopic Approach
0SWC4KZ Revision of Nonautologous Tissue Substitute in Right Knee Joint, Percutaneous Endoscopic Approach

0SWD Lower Joints, Revision22 codes

0SWD00Z Revision of Drainage Device in Left Knee Joint, Open Approach
0SWD03Z Revision of Infusion Device in Left Knee Joint, Open Approach
0SWD04Z Revision of Internal Fixation Device in Left Knee Joint, Open Approach
0SWD05Z Revision of External Fixation Device in Left Knee Joint, Open Approach
0SWD07Z Revision of Autologous Tissue Substitute in Left Knee Joint, Open Approach
0SWD08Z Revision of Spacer in Left Knee Joint, Open Approach
0SWD09Z Revision of Liner in Left Knee Joint, Open Approach
0SWD0KZ Revision of Nonautologous Tissue Substitute in Left Knee Joint, Open Approach
0SWD30Z Revision of Drainage Device in Left Knee Joint, Percutaneous Approach
0SWD33Z Revision of Infusion Device in Left Knee Joint, Percutaneous Approach
0SWD34Z Revision of Internal Fixation Device in Left Knee Joint, Percutaneous Approach
0SWD35Z Revision of External Fixation Device in Left Knee Joint, Percutaneous Approach
0SWD37Z Revision of Autologous Tissue Substitute in Left Knee Joint, Percutaneous Approach
0SWD38Z Revision of Spacer in Left Knee Joint, Percutaneous Approach
0SWD3KZ Revision of Nonautologous Tissue Substitute in Left Knee Joint, Percutaneous Approach
0SWD40Z Revision of Drainage Device in Left Knee Joint, Percutaneous Endoscopic Approach
0SWD43Z Revision of Infusion Device in Left Knee Joint, Percutaneous Endoscopic Approach
0SWD44Z Revision of Internal Fixation Device in Left Knee Joint, Percutaneous Endoscopic Approach
0SWD45Z Revision of External Fixation Device in Left Knee Joint, Percutaneous Endoscopic Approach
0SWD47Z Revision of Autologous Tissue Substitute in Left Knee Joint, Percutaneous Endoscopic Approach
0SWD48Z Revision of Spacer in Left Knee Joint, Percutaneous Endoscopic Approach
0SWD4KZ Revision of Nonautologous Tissue Substitute in Left Knee Joint, Percutaneous Endoscopic Approach

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 489?

MS-DRG 489 (Knee Procedures without Principal Diagnosis of Infection without CC/MCC) is a surgical DRG in MDC 08 (Diseases & Disorders of the Musculoskeletal System & Connective Tissue). Its FY 2026 relative weight is 1.1168 with a geometric mean length of stay of 1.2 days.

What is the difference between DRG 488, 489?

All 2 share the same base category; the severity of secondary diagnoses separates them: 488 (with CC/MCC), 489 (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 489?

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

What is the relative weight of DRG 489?

The FY 2026 relative weight of this DRG is 1.1168, meaning reimbursement of roughly 1.12 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 488 – Knee Procedures without Principal Diagnosis of Infection Next →DRG 492 – Lower Extremity and Humerus Procedures Except Hip, Foot and

Source: CMS ICD-10 MS-DRG v43.0 Definitions Manual and the FY 2026 IPPS Final Rule (Table 5), effective October 1, 2025 through September 30, 2026. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.