MS-DRG · FY 2026 v43.0

MS-DRG 33 – Ventricular Shunt Procedures without CC/MCC

A Surgical DRG in MDC 01 (Diseases & Disorders of the Nervous System). Inpatient cases group to DRG 33 when one of the 94 ICD-10-PCS operating-room procedures listed below is reported. Its FY 2026 relative weight is 1.6629 with a geometric mean length of stay of 1.5 days.

Surgical DRG – assigned by operating-room procedure✓ Official CMS v43.0 dataset
1.6629
Relative Weight
1.5
Geometric Mean LOS (days)
1.9
Arithmetic Mean LOS (days)
94
Procedure Codes

Severity family

DRG 31with MCCWeight 4.4805 · GMLOS 7.0 daysDRG 32with CCWeight 2.1310 · GMLOS 2.5 daysDRG 33without CC/MCCWeight 1.6629 · GMLOS 1.5 days
How a case is assigned to DRG 33

The grouper first assigns the case to MDC 01 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 → 31; with CC → 32; without CC/MCC → 33.

ICD-10-PCS

Procedure Codes 94 codes · 6 categories

94 of 94 shown
0016 Central Nervous System and Cranial Nerves, Bypass81 codes
  • 0016070 Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Open Approach
  • 0016071 Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Open Approach
  • 0016072 Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Open Approach
  • 0016073 Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Open Approach
  • 0016074 Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Open Approach
  • 0016075 Bypass Cerebral Ventricle to Intestine with Autologous Tissue Substitute, Open Approach
  • 0016076 Bypass Cerebral Ventricle to Peritoneal Cavity with Autologous Tissue Substitute, Open Approach
  • 0016077 Bypass Cerebral Ventricle to Urinary Tract with Autologous Tissue Substitute, Open Approach
  • 0016078 Bypass Cerebral Ventricle to Bone Marrow with Autologous Tissue Substitute, Open Approach
  • 00160J0 Bypass Cerebral Ventricle to Nasopharynx with Synthetic Substitute, Open Approach
  • 00160J1 Bypass Cerebral Ventricle to Mastoid Sinus with Synthetic Substitute, Open Approach
  • 00160J2 Bypass Cerebral Ventricle to Atrium with Synthetic Substitute, Open Approach
  • 00160J3 Bypass Cerebral Ventricle to Blood Vessel with Synthetic Substitute, Open Approach
  • 00160J4 Bypass Cerebral Ventricle to Pleural Cavity with Synthetic Substitute, Open Approach
  • 00160J5 Bypass Cerebral Ventricle to Intestine with Synthetic Substitute, Open Approach
  • 00160J6 Bypass Cerebral Ventricle to Peritoneal Cavity with Synthetic Substitute, Open Approach
  • 00160J7 Bypass Cerebral Ventricle to Urinary Tract with Synthetic Substitute, Open Approach
  • 00160J8 Bypass Cerebral Ventricle to Bone Marrow with Synthetic Substitute, Open Approach
  • 00160K0 Bypass Cerebral Ventricle to Nasopharynx with Nonautologous Tissue Substitute, Open Approach
  • 00160K1 Bypass Cerebral Ventricle to Mastoid Sinus with Nonautologous Tissue Substitute, Open Approach
  • 00160K2 Bypass Cerebral Ventricle to Atrium with Nonautologous Tissue Substitute, Open Approach
  • 00160K3 Bypass Cerebral Ventricle to Blood Vessel with Nonautologous Tissue Substitute, Open Approach
  • 00160K4 Bypass Cerebral Ventricle to Pleural Cavity with Nonautologous Tissue Substitute, Open Approach
  • 00160K5 Bypass Cerebral Ventricle to Intestine with Nonautologous Tissue Substitute, Open Approach
  • 00160K6 Bypass Cerebral Ventricle to Peritoneal Cavity with Nonautologous Tissue Substitute, Open Approach
  • 00160K7 Bypass Cerebral Ventricle to Urinary Tract with Nonautologous Tissue Substitute, Open Approach
  • 00160K8 Bypass Cerebral Ventricle to Bone Marrow with Nonautologous Tissue Substitute, Open Approach
  • 0016370 Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Percutaneous Approach
  • 0016371 Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Percutaneous Approach
  • 0016372 Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Percutaneous Approach
  • 0016373 Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Percutaneous Approach
  • 0016374 Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Percutaneous Approach
  • 0016375 Bypass Cerebral Ventricle to Intestine with Autologous Tissue Substitute, Percutaneous Approach
  • 0016376 Bypass Cerebral Ventricle to Peritoneal Cavity with Autologous Tissue Substitute, Percutaneous Approach
  • 0016377 Bypass Cerebral Ventricle to Urinary Tract with Autologous Tissue Substitute, Percutaneous Approach
  • 0016378 Bypass Cerebral Ventricle to Bone Marrow with Autologous Tissue Substitute, Percutaneous Approach
  • 00163J0 Bypass Cerebral Ventricle to Nasopharynx with Synthetic Substitute, Percutaneous Approach
  • 00163J1 Bypass Cerebral Ventricle to Mastoid Sinus with Synthetic Substitute, Percutaneous Approach
  • 00163J2 Bypass Cerebral Ventricle to Atrium with Synthetic Substitute, Percutaneous Approach
  • 00163J3 Bypass Cerebral Ventricle to Blood Vessel with Synthetic Substitute, Percutaneous Approach
  • 00163J4 Bypass Cerebral Ventricle to Pleural Cavity with Synthetic Substitute, Percutaneous Approach
  • 00163J5 Bypass Cerebral Ventricle to Intestine with Synthetic Substitute, Percutaneous Approach
  • 00163J6 Bypass Cerebral Ventricle to Peritoneal Cavity with Synthetic Substitute, Percutaneous Approach
  • 00163J7 Bypass Cerebral Ventricle to Urinary Tract with Synthetic Substitute, Percutaneous Approach
  • 00163J8 Bypass Cerebral Ventricle to Bone Marrow with Synthetic Substitute, Percutaneous Approach
  • 00163K0 Bypass Cerebral Ventricle to Nasopharynx with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K1 Bypass Cerebral Ventricle to Mastoid Sinus with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K2 Bypass Cerebral Ventricle to Atrium with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K3 Bypass Cerebral Ventricle to Blood Vessel with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K4 Bypass Cerebral Ventricle to Pleural Cavity with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K5 Bypass Cerebral Ventricle to Intestine with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K6 Bypass Cerebral Ventricle to Peritoneal Cavity with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K7 Bypass Cerebral Ventricle to Urinary Tract with Nonautologous Tissue Substitute, Percutaneous Approach
  • 00163K8 Bypass Cerebral Ventricle to Bone Marrow with Nonautologous Tissue Substitute, Percutaneous Approach
  • 0016470 Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016471 Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016472 Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016473 Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016474 Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016475 Bypass Cerebral Ventricle to Intestine with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016476 Bypass Cerebral Ventricle to Peritoneal Cavity with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016477 Bypass Cerebral Ventricle to Urinary Tract with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 0016478 Bypass Cerebral Ventricle to Bone Marrow with Autologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164J0 Bypass Cerebral Ventricle to Nasopharynx with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J1 Bypass Cerebral Ventricle to Mastoid Sinus with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J2 Bypass Cerebral Ventricle to Atrium with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J3 Bypass Cerebral Ventricle to Blood Vessel with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J4 Bypass Cerebral Ventricle to Pleural Cavity with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J5 Bypass Cerebral Ventricle to Intestine with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J6 Bypass Cerebral Ventricle to Peritoneal Cavity with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J7 Bypass Cerebral Ventricle to Urinary Tract with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164J8 Bypass Cerebral Ventricle to Bone Marrow with Synthetic Substitute, Percutaneous Endoscopic Approach
  • 00164K0 Bypass Cerebral Ventricle to Nasopharynx with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K1 Bypass Cerebral Ventricle to Mastoid Sinus with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K2 Bypass Cerebral Ventricle to Atrium with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K3 Bypass Cerebral Ventricle to Blood Vessel with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K4 Bypass Cerebral Ventricle to Pleural Cavity with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K5 Bypass Cerebral Ventricle to Intestine with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K6 Bypass Cerebral Ventricle to Peritoneal Cavity with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K7 Bypass Cerebral Ventricle to Urinary Tract with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
  • 00164K8 Bypass Cerebral Ventricle to Bone Marrow with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
00P6 Central Nervous System and Cranial Nerves, Removal3 codes
  • 00P60JZ Removal of Synthetic Substitute from Cerebral Ventricle, Open Approach
  • 00P63JZ Removal of Synthetic Substitute from Cerebral Ventricle, Percutaneous Approach
  • 00P64JZ Removal of Synthetic Substitute from Cerebral Ventricle, Percutaneous Endoscopic Approach
00W6 Central Nervous System and Cranial Nerves, Revision3 codes
  • 00W60JZ Revision of Synthetic Substitute in Cerebral Ventricle, Open Approach
  • 00W63JZ Revision of Synthetic Substitute in Cerebral Ventricle, Percutaneous Approach
  • 00W64JZ Revision of Synthetic Substitute in Cerebral Ventricle, Percutaneous Endoscopic Approach
0W11 Anatomical Regions, General, Bypass4 codes
  • 0W110J9 Bypass Cranial Cavity to Right Pleural Cavity with Synthetic Substitute, Open Approach
  • 0W110JB Bypass Cranial Cavity to Left Pleural Cavity with Synthetic Substitute, Open Approach
  • 0W110JG Bypass Cranial Cavity to Peritoneal Cavity with Synthetic Substitute, Open Approach
  • 0W110JJ Bypass Cranial Cavity to Pelvic Cavity with Synthetic Substitute, Open Approach
0WPG Anatomical Regions, General, Removal1 code
  • 0WPG0JZ Removal of Synthetic Substitute from Peritoneal Cavity, Open Approach
0WWG Anatomical Regions, General, Revision2 codes
  • 0WWG0JZ Revision of Synthetic Substitute in Peritoneal Cavity, Open Approach
  • 0WWG4JZ Revision of Synthetic Substitute in Peritoneal Cavity, 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 33?

MS-DRG 33 (Ventricular Shunt Procedures without CC/MCC) is a surgical DRG in MDC 01 (Diseases & Disorders of the Nervous System). Its FY 2026 relative weight is 1.6629 with a geometric mean length of stay of 1.5 days.

What is the difference between DRG 31, 32, 33?

All 3 share the same base category; the severity of secondary diagnoses separates them: 31 (with MCC), 32 (with CC), 33 (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 33?

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

What is the relative weight of DRG 33?

The FY 2026 relative weight of this DRG is 1.6629, meaning reimbursement of roughly 1.66 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 32 – Ventricular Shunt Procedures with CC
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.