DRG 373
Medical DRGMajor Gastrointestinal Disorders and Peritoneal Infections without CC/MCC
What is MS-DRG 373?
MS-DRG 373 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 06 (MDC 06) without a significant Complication or Comorbidity. It maps to 83 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 0.7274 with a geometric mean length of stay of 2.7 days and an arithmetic mean of 3.3 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.
FY 2026 Payment Data
Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).
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.
Linked ICD-10-CM Diagnosis Mappings
- A00.0
Cholera due to Vibrio cholerae 01, biovar cholerae
BillableChapter 1 - A00.1
Cholera due to Vibrio cholerae 01, biovar eltor
BillableChapter 1 - A00.9
Cholera, unspecified
BillableChapter 1 - A02.0
Salmonella enteritis
BillableChapter 1 - A03.0
Shigellosis due to Shigella dysenteriae
BillableChapter 1 - A03.1
Shigellosis due to Shigella flexneri
BillableChapter 1 - A03.2
Shigellosis due to Shigella boydii
BillableChapter 1 - A03.3
Shigellosis due to Shigella sonnei
BillableChapter 1 - A03.8
Other shigellosis
BillableChapter 1 - A03.9
Shigellosis, unspecified
BillableChapter 1 - A04.0
Enteropathogenic Escherichia coli infection
BillableChapter 1 - A04.1
Enterotoxigenic Escherichia coli infection
BillableChapter 1 - A04.2
Enteroinvasive Escherichia coli infection
BillableChapter 1 - A04.3
Enterohemorrhagic Escherichia coli infection
BillableChapter 1 - A04.4
Other intestinal Escherichia coli infections
BillableChapter 1 - A04.5
Campylobacter enteritis
BillableChapter 1 - A04.6
Enteritis due to Yersinia enterocolitica
BillableChapter 1 - A04.71
Enterocolitis due to Clostridium difficile, recurrent
BillableChapter 1 - A04.72
Enterocolitis due to Clostridium difficile, not specified as recurrent
BillableChapter 1 - A04.8
Other specified bacterial intestinal infections
BillableChapter 1 - A04.9
Bacterial intestinal infection, unspecified
BillableChapter 1 - A05.0
Foodborne staphylococcal intoxication
BillableChapter 1 - A05.2
Foodborne Clostridium perfringens [Clostridium welchii] intoxication
BillableChapter 1 - A05.3
Foodborne Vibrio parahaemolyticus intoxication
BillableChapter 1 - A05.4
Foodborne Bacillus cereus intoxication
BillableChapter 1 - A05.5
Foodborne Vibrio vulnificus intoxication
BillableChapter 1 - A05.8
Other specified bacterial foodborne intoxications
BillableChapter 1 - A06.0
Acute amebic dysentery
BillableChapter 1 - A06.1
Chronic intestinal amebiasis
BillableChapter 1 - A06.2
Amebic nondysenteric colitis
BillableChapter 1 - A07.0
Balantidiasis
BillableChapter 1 - A07.1
Giardiasis [lambliasis]
BillableChapter 1 - A07.2
Cryptosporidiosis
BillableChapter 1 - A07.3
Isosporiasis
BillableChapter 1 - A07.4
Cyclosporiasis
BillableChapter 1 - A07.8
Other specified protozoal intestinal diseases
BillableChapter 1 - A07.9
Protozoal intestinal disease, unspecified
BillableChapter 1 - A18.31
Tuberculous peritonitis
BillableChapter 1 - A18.32
Tuberculous enteritis
BillableChapter 1 - A18.39
Retroperitoneal tuberculosis
BillableChapter 1 - A18.83
Tuberculosis of digestive tract organs, not elsewhere classified
BillableChapter 1 - A21.3
Gastrointestinal tularemia
BillableChapter 1 - A22.2
Gastrointestinal anthrax
BillableChapter 1 - A42.1
Abdominal actinomycosis
BillableChapter 1 - A54.85
Gonococcal peritonitis
BillableChapter 1 - B69.0
Cysticercosis of central nervous system
BillableChapter 1 - B69.1
Cysticercosis of eye
BillableChapter 1 - B69.81
Myositis in cysticercosis
BillableChapter 1 - B69.89
Cysticercosis of other sites
BillableChapter 1 - B69.9
Cysticercosis, unspecified
BillableChapter 1 - B70.1
Sparganosis
BillableChapter 1 - B71.0
Hymenolepiasis
BillableChapter 1 - B71.1
Dipylidiasis
BillableChapter 1 - B71.8
Other specified cestode infections
BillableChapter 1 - B71.9
Cestode infection, unspecified
BillableChapter 1 - B76.0
Ancylostomiasis
BillableChapter 1 - B76.1
Necatoriasis
BillableChapter 1 - B76.8
Other hookworm diseases
BillableChapter 1 - B76.9
Hookworm disease, unspecified
BillableChapter 1 - K35.200
Acute appendicitis with generalized peritonitis, without perforation or abscess
BillableChapter 11 - K35.201
Acute appendicitis with generalized peritonitis, with perforation, without abscess
BillableChapter 11 - K35.209
Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforation
BillableChapter 11 - K35.210
Acute appendicitis with generalized peritonitis, without perforation, with abscess
BillableChapter 11 - K35.211
Acute appendicitis with generalized peritonitis, with perforation and abscess
BillableChapter 11 - K35.219
Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforation
BillableChapter 11 - K35.30
Acute appendicitis with localized peritonitis, without perforation or gangrene
BillableChapter 11 - K35.31
Acute appendicitis with localized peritonitis and gangrene, without perforation
BillableChapter 11 - K35.32
Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess
BillableChapter 11 - K35.33
Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess
BillableChapter 11 - K35.890
Other acute appendicitis without perforation or gangrene
BillableChapter 11 - K35.891
Other acute appendicitis without perforation, with gangrene
BillableChapter 11 - K63.0
Abscess of intestine
BillableChapter 11 - K65.0
Generalized (acute) peritonitis
BillableChapter 11 - K65.1
Peritoneal abscess
BillableChapter 11 - K65.2
Spontaneous bacterial peritonitis
BillableChapter 11 - K65.8
Other peritonitis
BillableChapter 11 - K65.9
Peritonitis, unspecified
BillableChapter 11 - K67
Disorders of peritoneum in infectious diseases classified elsewhere
BillableChapter 11 - K68.12
Psoas muscle abscess
BillableChapter 11 - K68.19
Other retroperitoneal abscess
BillableChapter 11 - K68.2
Retroperitoneal fibrosis
BillableChapter 11 - K68.3
Retroperitoneal hematoma
BillableChapter 11 - K68.9
Other disorders of retroperitoneum
BillableChapter 11