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  3. Diagnosis Codes in MS-DRG 374 - Digestive Malignancy With MCC

Diagnosis Codes in MS-DRG 374 - Digestive Malignancy With MCC

The Medicare Severity Diagnosis-Related Group (MS-DRG) is a patient classification system used to categorize hospital cases based on clinical similarity and expected resource use. MS-DRGs organize all possible principal diagnoses into mutually exclusive groups known as Major Diagnostic Categories (MDCs), which help determine reimbursement under the Medicare Inpatient Prospective Payment System.

This section lists the diagnosis codes included in MS-DRG V42.0: Digestive Malignancy with MCC from October 1, 2024, through September 30, 2025.

MS-DRG: 374

MS-DRG Title: Digestive Malignancy with MCC

MCD: 06

Relative Weight: 2.1115 Relative Weight
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Geometric LOS: 2.11 Geometric Length of Stay
The geometric mean length of stay (GMLOS) is used by Medicare to calculate the reimbursement for patients whose medical treatment takes a much longer or shorter time than average.

Arithmetic LOS: 5.60 Arithmetic Length of Stay
The average length of stay (ALOS) reflects the average number of days a patient spends in a hospital for each admission.

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    • C19 - Malignant neoplasm of rectosigmoid junction

    • C20 - Malignant neoplasm of rectum

  • C15 - Malignant neoplasm of esophagus

    • C15.3 - Malignant neoplasm of upper third of esophagus

    • C15.4 - Malignant neoplasm of middle third of esophagus

    • C15.5 - Malignant neoplasm of lower third of esophagus

    • C15.8 - Malignant neoplasm of overlapping sites of esophagus

    • C15.9 - Malignant neoplasm of esophagus, unspecified

  • C16 - Malignant neoplasm of stomach

    • C16.0 - Malignant neoplasm of cardia

    • C16.1 - Malignant neoplasm of fundus of stomach

    • C16.2 - Malignant neoplasm of body of stomach

    • C16.3 - Malignant neoplasm of pyloric antrum

    • C16.4 - Malignant neoplasm of pylorus

    • C16.5 - Malignant neoplasm of lesser curvature of stomach, unspecified

    • C16.6 - Malignant neoplasm of greater curvature of stomach, unspecified

    • C16.8 - Malignant neoplasm of overlapping sites of stomach

    • C16.9 - Malignant neoplasm of stomach, unspecified

  • C17 - Malignant neoplasm of small intestine

    • C17.0 - Malignant neoplasm of duodenum

    • C17.1 - Malignant neoplasm of jejunum

    • C17.2 - Malignant neoplasm of ileum

    • C17.3 - Meckel's diverticulum, malignant

    • C17.8 - Malignant neoplasm of overlapping sites of small intestine

    • C17.9 - Malignant neoplasm of small intestine, unspecified

  • C18 - Malignant neoplasm of colon

    • C18.0 - Malignant neoplasm of cecum

    • C18.1 - Malignant neoplasm of appendix

    • C18.2 - Malignant neoplasm of ascending colon

    • C18.3 - Malignant neoplasm of hepatic flexure

    • C18.4 - Malignant neoplasm of transverse colon

    • C18.5 - Malignant neoplasm of splenic flexure

    • C18.6 - Malignant neoplasm of descending colon

    • C18.7 - Malignant neoplasm of sigmoid colon

    • C18.8 - Malignant neoplasm of overlapping sites of colon

    • C18.9 - Malignant neoplasm of colon, unspecified

  • C21 - Malignant neoplasm of anus and anal canal

    • C21.0 - Malignant neoplasm of anus, unspecified

    • C21.1 - Malignant neoplasm of anal canal

    • C21.2 - Malignant neoplasm of cloacogenic zone

    • C21.8 - Malignant neoplasm of overlapping sites of rectum, anus and anal canal

  • C26 - Malignant neoplasm of other and ill-defined digestive organs

    • C26.0 - Malignant neoplasm of intestinal tract, part unspecified

    • C26.9 - Malignant neoplasm of ill-defined sites within the digestive system

  • C45 - Mesothelioma

    • C45.1 - Mesothelioma of peritoneum

  • C46 - Kaposi's sarcoma

    • C46.4 - Kaposi's sarcoma of gastrointestinal sites

  • C48 - Malignant neoplasm of retroperitoneum and peritoneum

    • C48.1 - Malignant neoplasm of specified parts of peritoneum

    • C48.2 - Malignant neoplasm of peritoneum, unspecified

    • C48.8 - Malignant neoplasm of overlapping sites of retroperitoneum and peritoneum

  • C49.A - Gastrointestinal stromal tumor

    • C49.A0 - Gastrointestinal stromal tumor, unspecified site

    • C49.A1 - Gastrointestinal stromal tumor of esophagus

    • C49.A2 - Gastrointestinal stromal tumor of stomach

    • C49.A3 - Gastrointestinal stromal tumor of small intestine

    • C49.A4 - Gastrointestinal stromal tumor of large intestine

    • C49.A5 - Gastrointestinal stromal tumor of rectum

    • C49.A9 - Gastrointestinal stromal tumor of other sites

  • C76 - Malignant neoplasm of other and ill-defined sites

    • C76.2 - Malignant neoplasm of abdomen

  • C78 - Secondary malignant neoplasm of respiratory and digestive organs

    • C78.4 - Secondary malignant neoplasm of small intestine

    • C78.5 - Secondary malignant neoplasm of large intestine and rectum

    • C78.6 - Secondary malignant neoplasm of retroperitoneum and peritoneum

  • C78.8 - Secondary malignant neoplasm of other and unspecified digestive organs

    • C78.80 - Secondary malignant neoplasm of unspecified digestive organ

    • C78.89 - Secondary malignant neoplasm of other digestive organs

  • C7A.01 - Malignant carcinoid tumors of the small intestine

    • C7A.010 - Malignant carcinoid tumor of the duodenum

    • C7A.011 - Malignant carcinoid tumor of the jejunum

    • C7A.012 - Malignant carcinoid tumor of the ileum

    • C7A.019 - Malignant carcinoid tumor of the small intestine, unspecified portion

  • C7A.02 - Malignant carcinoid tumors of the appendix, large intestine, and rectum

    • C7A.020 - Malignant carcinoid tumor of the appendix

    • C7A.021 - Malignant carcinoid tumor of the cecum

    • C7A.022 - Malignant carcinoid tumor of the ascending colon

    • C7A.023 - Malignant carcinoid tumor of the transverse colon

    • C7A.024 - Malignant carcinoid tumor of the descending colon

    • C7A.025 - Malignant carcinoid tumor of the sigmoid colon

    • C7A.026 - Malignant carcinoid tumor of the rectum

    • C7A.029 - Malignant carcinoid tumor of the large intestine, unspecified portion

  • C7A.09 - Malignant carcinoid tumors of other sites

    • C7A.092 - Malignant carcinoid tumor of the stomach

    • C7A.094 - Malignant carcinoid tumor of the foregut, unspecified

    • C7A.095 - Malignant carcinoid tumor of the midgut, unspecified

    • C7A.096 - Malignant carcinoid tumor of the hindgut, unspecified

  • C7B.0 - Secondary carcinoid tumors

    • C7B.04 - Secondary carcinoid tumors of peritoneum

  • D00 - Carcinoma in situ of oral cavity, esophagus and stomach

    • D00.1 - Carcinoma in situ of esophagus

    • D00.2 - Carcinoma in situ of stomach

  • D01 - Carcinoma in situ of other and unspecified digestive organs

    • D01.0 - Carcinoma in situ of colon

    • D01.1 - Carcinoma in situ of rectosigmoid junction

    • D01.2 - Carcinoma in situ of rectum

    • D01.3 - Carcinoma in situ of anus and anal canal

    • D01.7 - Carcinoma in situ of other specified digestive organs

    • D01.9 - Carcinoma in situ of digestive organ, unspecified

  • D01.4 - Carcinoma in situ of other and unspecified parts of intestine

    • D01.40 - Carcinoma in situ of unspecified part of intestine

    • D01.49 - Carcinoma in situ of other parts of intestine

  • D37 - Neoplasm of uncertain behavior of oral cavity and digestive organs

    • D37.1 - Neoplasm of uncertain behavior of stomach

    • D37.2 - Neoplasm of uncertain behavior of small intestine

    • D37.3 - Neoplasm of uncertain behavior of appendix

    • D37.4 - Neoplasm of uncertain behavior of colon

    • D37.5 - Neoplasm of uncertain behavior of rectum

    • D37.8 - Neoplasm of uncertain behavior of other specified digestive organs

    • D37.9 - Neoplasm of uncertain behavior of digestive organ, unspecified

  • D48 - Neoplasm of uncertain behavior of other and unspecified sites

    • D48.3 - Neoplasm of uncertain behavior of retroperitoneum

    • D48.4 - Neoplasm of uncertain behavior of peritoneum

  • D49 - Neoplasms of unspecified behavior

    • D49.0 - Neoplasm of unspecified behavior of digestive system