MS-DRG 371: MAJOR GASTROINTESTINAL DISORDERS AND PERITONEAL INFECTIONS WITH MCC
MS-DRG 371 is major gastrointestinal disorders and peritoneal infections with mcc, in MDC 06 (a medical DRG), at the with-MCC (major complication or comorbidity) level. Its FY2027 relative weight is 1.7089, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 5.10 days. 86 ICD-10-CM principal diagnoses group into MS-DRGs 371–373 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 1.7089
- Geometric mean LOS
- 5.10
- Arithmetic mean LOS
- 6.70
- Post-acute transfer
- Yes
This DRG is subject to the post-acute care transfer policy: a discharge to a qualifying setting below the mean length of stay is paid per diem rather than in full.
Principal diagnoses that group to MS-DRGs 371–373
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 86 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 371–373 the case lands in. The 24 most-searched:
- K65.1Peritoneal abscess
- A04.72Enterocolitis due to Clostridium difficile, not specified as recurrent
- A04.8Other specified bacterial intestinal infections
- K35.30Acute appendicitis with localized peritonitis, without perforation or gangrene
- K35.32Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess
- K35.33Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess
- A04.71Enterocolitis due to Clostridium difficile, recurrent
- A04.9Bacterial intestinal infection, unspecified
- K65.9Peritonitis, unspecified
- A00.0Cholera due to Vibrio cholerae 01, biovar cholerae
- A02.0Salmonella enteritis
- A06.0Acute amebic dysentery
- A07.1Giardiasis [lambliasis]
- B76.9Hookworm disease, unspecified
- K35.890Other acute appendicitis without perforation or gangrene
- K35.891Other acute appendicitis without perforation, with gangrene
- K63.0Abscess of intestine
- K65.0Generalized (acute) peritonitis
- K65.2Spontaneous bacterial peritonitis
- K68.12Psoas muscle abscess
- K68.19Other retroperitoneal abscess
- A00.1Cholera due to Vibrio cholerae 01, biovar eltor
- A00.9Cholera, unspecified
- A03.0Shigellosis due to Shigella dysenteriae
62 more codes group here. Open any code above for its full hierarchy, or check a whole claim in the free DRG calculator.
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 371.
| 371 | MAJOR GASTROINTESTINAL DISORDERS AND PERITONEAL INFECTIONS WITH MCC | 1.7089 | |
| 372 | MAJOR GASTROINTESTINAL DISORDERS AND PERITONEAL INFECTIONS WITH CC | 0.9964 | -0.7125 |
| 373 | MAJOR GASTROINTESTINAL DISORDERS AND PERITONEAL INFECTIONS WITHOUT CC/MCC | 0.6941 | -1.0148 |
All FY2027 MS-DRGs · MDC 06