All ICD10 Codes

DRG 420

Surgical DRG

Hepatobiliary Diagnostic Procedures with MCC

TypeSurgicalMDC07

What is MS-DRG 420?

MS-DRG 420 is a Surgical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 07 (MDC 07) with a Major Complication or Comorbidity (MCC). For FY 2026 it carries a relative weight of 3.4071 with a geometric mean length of stay of 6.9 days and an arithmetic mean of 9.5 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Classification
Surgical DRG
Procedure-driven grouping
MDC
Major Diagnostic Category 07
Linked Codes
0 diagnosis
112 procedure

FY 2026 Payment Data

Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).

Relative Weight
3.4071
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
6.9 days
Used for transfer payment calculations
Arithmetic Mean LOS
9.5 days
Average length of stay
Post-Acute Transfer
No
Not subject to the transfer policy

Related MS-DRGs in This Severity Group

The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.

DRGTitleRel. WeightGMLOS
420Hepatobiliary Diagnostic Procedures with MCCThis page3.40716.9 days
421Hepatobiliary Diagnostic Procedures with CC1.73753.4 days
422Hepatobiliary Diagnostic Procedures without CC/MCC1.39952.3 days

Linked ICD-10-PCS Procedure Mappings

  • 07JP0ZZ

    Inspection of Spleen, Open Approach

    BillableSection 0
  • 0D9U0ZX

    Drainage of Omentum, Open Approach, Diagnostic

    BillableSection 0
  • 0D9U4ZX

    Drainage of Omentum, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0D9V0ZX

    Drainage of Mesentery, Open Approach, Diagnostic

    BillableSection 0
  • 0D9V4ZX

    Drainage of Mesentery, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0D9W0ZX

    Drainage of Peritoneum, Open Approach, Diagnostic

    BillableSection 0
  • 0D9W4ZX

    Drainage of Peritoneum, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0DBU0ZX

    Excision of Omentum, Open Approach, Diagnostic

    BillableSection 0
  • 0DBV0ZX

    Excision of Mesentery, Open Approach, Diagnostic

    BillableSection 0
  • 0DBW0ZX

    Excision of Peritoneum, Open Approach, Diagnostic

    BillableSection 0
  • 0DJ00ZZ

    Inspection of Upper Intestinal Tract, Open Approach

    BillableSection 0
  • 0DJ60ZZ

    Inspection of Stomach, Open Approach

    BillableSection 0
  • 0DJ64ZZ

    Inspection of Stomach, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0DJD0ZZ

    Inspection of Lower Intestinal Tract, Open Approach

    BillableSection 0
  • 0DJU0ZZ

    Inspection of Omentum, Open Approach

    BillableSection 0
  • 0DJU4ZZ

    Inspection of Omentum, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0DJV0ZZ

    Inspection of Mesentery, Open Approach

    BillableSection 0
  • 0DJV4ZZ

    Inspection of Mesentery, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0DJW0ZZ

    Inspection of Peritoneum, Open Approach

    BillableSection 0
  • 0DJW4ZZ

    Inspection of Peritoneum, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0F900ZX

    Drainage of Liver, Open Approach, Diagnostic

    BillableSection 0
  • 0F910ZX

    Drainage of Right Lobe Liver, Open Approach, Diagnostic

    BillableSection 0
  • 0F920ZX

    Drainage of Left Lobe Liver, Open Approach, Diagnostic

    BillableSection 0
  • 0F940ZX

    Drainage of Gallbladder, Open Approach, Diagnostic

    BillableSection 0
  • 0F944ZX

    Drainage of Gallbladder, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0F950ZX

    Drainage of Right Hepatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0F960ZX

    Drainage of Left Hepatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0F970ZX

    Drainage of Common Hepatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0F980ZX

    Drainage of Cystic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0F990ZX

    Drainage of Common Bile Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0F9C0ZX

    Drainage of Ampulla of Vater, Open Approach, Diagnostic

    BillableSection 0
  • 0F9D0ZX

    Drainage of Pancreatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0F9F0ZX

    Drainage of Accessory Pancreatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0F9G0ZX

    Drainage of Pancreas, Open Approach, Diagnostic

    BillableSection 0
  • 0FB00ZX

    Excision of Liver, Open Approach, Diagnostic

    BillableSection 0
  • 0FB04ZX

    Excision of Liver, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0FB10ZX

    Excision of Right Lobe Liver, Open Approach, Diagnostic

    BillableSection 0
  • 0FB14ZX

    Excision of Right Lobe Liver, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0FB20ZX

    Excision of Left Lobe Liver, Open Approach, Diagnostic

    BillableSection 0
  • 0FB24ZX

    Excision of Left Lobe Liver, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0FB40ZX

    Excision of Gallbladder, Open Approach, Diagnostic

    BillableSection 0
  • 0FB50ZX

    Excision of Right Hepatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0FB60ZX

    Excision of Left Hepatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0FB70ZX

    Excision of Common Hepatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0FB80ZX

    Excision of Cystic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0FB90ZX

    Excision of Common Bile Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0FBC0ZX

    Excision of Ampulla of Vater, Open Approach, Diagnostic

    BillableSection 0
  • 0FBD0ZX

    Excision of Pancreatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0FBF0ZX

    Excision of Accessory Pancreatic Duct, Open Approach, Diagnostic

    BillableSection 0
  • 0FBG0ZX

    Excision of Pancreas, Open Approach, Diagnostic

    BillableSection 0
  • 0FD04ZX

    Extraction of Liver, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0FD14ZX

    Extraction of Right Lobe Liver, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0FD24ZX

    Extraction of Left Lobe Liver, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0FJ00ZZ

    Inspection of Liver, Open Approach

    BillableSection 0
  • 0FJ04ZZ

    Inspection of Liver, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0FJ40ZZ

    Inspection of Gallbladder, Open Approach

    BillableSection 0
  • 0FJ44ZZ

    Inspection of Gallbladder, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0FJD0ZZ

    Inspection of Pancreatic Duct, Open Approach

    BillableSection 0
  • 0FJD4ZZ

    Inspection of Pancreatic Duct, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0FJG0ZZ

    Inspection of Pancreas, Open Approach

    BillableSection 0
  • 0FJG4ZZ

    Inspection of Pancreas, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0W9G00Z

    Drainage of Peritoneal Cavity with Drainage Device, Open Approach

    BillableSection 0
  • 0W9G0ZX

    Drainage of Peritoneal Cavity, Open Approach, Diagnostic

    BillableSection 0
  • 0W9G0ZZ

    Drainage of Peritoneal Cavity, Open Approach

    BillableSection 0
  • 0W9G40Z

    Drainage of Peritoneal Cavity with Drainage Device, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0W9G4ZX

    Drainage of Peritoneal Cavity, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0W9G4ZZ

    Drainage of Peritoneal Cavity, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0W9H0ZX

    Drainage of Retroperitoneum, Open Approach, Diagnostic

    BillableSection 0
  • 0W9H3ZX

    Drainage of Retroperitoneum, Percutaneous Approach, Diagnostic

    BillableSection 0
  • 0W9H4ZX

    Drainage of Retroperitoneum, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0W9J0ZX

    Drainage of Pelvic Cavity, Open Approach, Diagnostic

    BillableSection 0
  • 0W9J4ZX

    Drainage of Pelvic Cavity, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0WBH0ZX

    Excision of Retroperitoneum, Open Approach, Diagnostic

    BillableSection 0
  • 0WCJ0ZZ

    Extirpation of Matter from Pelvic Cavity, Open Approach

    BillableSection 0
  • 0WCP0ZZ

    Extirpation of Matter from Gastrointestinal Tract, Open Approach

    BillableSection 0
  • 0WCR0ZZ

    Extirpation of Matter from Genitourinary Tract, Open Approach

    BillableSection 0
  • 0WJF4ZZ

    Inspection of Abdominal Wall, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0WJG0ZZ

    Inspection of Peritoneal Cavity, Open Approach

    BillableSection 0
  • 0WJG4ZZ

    Inspection of Peritoneal Cavity, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0WJH4ZZ

    Inspection of Retroperitoneum, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0WJJ0ZZ

    Inspection of Pelvic Cavity, Open Approach

    BillableSection 0
  • 0WJJ4ZZ

    Inspection of Pelvic Cavity, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0WJP0ZZ

    Inspection of Gastrointestinal Tract, Open Approach

    BillableSection 0
  • 0WJP4ZZ

    Inspection of Gastrointestinal Tract, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0WJR0ZZ

    Inspection of Genitourinary Tract, Open Approach

    BillableSection 0
  • 0WJR4ZZ

    Inspection of Genitourinary Tract, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0Y950ZX

    Drainage of Right Inguinal Region, Open Approach, Diagnostic

    BillableSection 0
  • 0Y953ZX

    Drainage of Right Inguinal Region, Percutaneous Approach, Diagnostic

    BillableSection 0
  • 0Y954ZX

    Drainage of Right Inguinal Region, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0Y960ZX

    Drainage of Left Inguinal Region, Open Approach, Diagnostic

    BillableSection 0
  • 0Y963ZX

    Drainage of Left Inguinal Region, Percutaneous Approach, Diagnostic

    BillableSection 0
  • 0Y964ZX

    Drainage of Left Inguinal Region, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0YB50ZX

    Excision of Right Inguinal Region, Open Approach, Diagnostic

    BillableSection 0
  • 0YB53ZX

    Excision of Right Inguinal Region, Percutaneous Approach, Diagnostic

    BillableSection 0
  • 0YB54ZX

    Excision of Right Inguinal Region, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0YB60ZX

    Excision of Left Inguinal Region, Open Approach, Diagnostic

    BillableSection 0
  • 0YB63ZX

    Excision of Left Inguinal Region, Percutaneous Approach, Diagnostic

    BillableSection 0
  • 0YB64ZX

    Excision of Left Inguinal Region, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0YB70ZX

    Excision of Right Femoral Region, Open Approach, Diagnostic

    BillableSection 0
  • 0YB73ZX

    Excision of Right Femoral Region, Percutaneous Approach, Diagnostic

    BillableSection 0
  • 0YB74ZX

    Excision of Right Femoral Region, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0YB80ZX

    Excision of Left Femoral Region, Open Approach, Diagnostic

    BillableSection 0
  • 0YB83ZX

    Excision of Left Femoral Region, Percutaneous Approach, Diagnostic

    BillableSection 0
  • 0YB84ZX

    Excision of Left Femoral Region, Percutaneous Endoscopic Approach, Diagnostic

    BillableSection 0
  • 0YJ54ZZ

    Inspection of Right Inguinal Region, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0YJ64ZZ

    Inspection of Left Inguinal Region, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0YJ74ZZ

    Inspection of Right Femoral Region, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0YJ84ZZ

    Inspection of Left Femoral Region, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0YJA4ZZ

    Inspection of Bilateral Inguinal Region, Percutaneous Endoscopic Approach

    BillableSection 0
  • 0YJE4ZZ

    Inspection of Bilateral Femoral Region, Percutaneous Endoscopic Approach

    BillableSection 0
  • 4A0C45Z

    Measurement of Biliary Flow, Percutaneous Endoscopic Approach

    BillableSection 4
  • 4A0C4BZ

    Measurement of Biliary Pressure, Percutaneous Endoscopic Approach

    BillableSection 4