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  3. Diagnosis Codes in MS-DRG 385 - Inflammatory Bowel Disease With MCC

Diagnosis Codes in MS-DRG 385 - Inflammatory Bowel Disease 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: Inflammatory Bowel Disease with MCC from October 1, 2024, through September 30, 2025.

MS-DRG: 385

MS-DRG Title: Inflammatory Bowel Disease with MCC

MCD: 06

Relative Weight: 1.6247 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: 1.62 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: 5.00 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.

  • K50.0 - Crohn's disease of small intestine

    • K50.00 - Crohn's disease of small intestine without complications

  • K50.01 - Crohn's disease of small intestine with complications

    • K50.011 - Crohn's disease of small intestine with rectal bleeding

    • K50.012 - Crohn's disease of small intestine with intestinal obstruction

    • K50.013 - Crohn's disease of small intestine with fistula

    • K50.014 - Crohn's disease of small intestine with abscess

    • K50.018 - Crohn's disease of small intestine with other complication

    • K50.019 - Crohn's disease of small intestine with unspecified complications

  • K50.1 - Crohn's disease of large intestine

    • K50.10 - Crohn's disease of large intestine without complications

  • K50.11 - Crohn's disease of large intestine with complications

    • K50.111 - Crohn's disease of large intestine with rectal bleeding

    • K50.112 - Crohn's disease of large intestine with intestinal obstruction

    • K50.113 - Crohn's disease of large intestine with fistula

    • K50.114 - Crohn's disease of large intestine with abscess

    • K50.118 - Crohn's disease of large intestine with other complication

    • K50.119 - Crohn's disease of large intestine with unspecified complications

  • K50.8 - Crohn's disease of both small and large intestine

    • K50.80 - Crohn's disease of both small and large intestine without complications

  • K50.81 - Crohn's disease of both small and large intestine with complications

    • K50.811 - Crohn's disease of both small and large intestine with rectal bleeding

    • K50.812 - Crohn's disease of both small and large intestine with intestinal obstruction

    • K50.813 - Crohn's disease of both small and large intestine with fistula

    • K50.814 - Crohn's disease of both small and large intestine with abscess

    • K50.818 - Crohn's disease of both small and large intestine with other complication

    • K50.819 - Crohn's disease of both small and large intestine with unspecified complications

  • K50.9 - Crohn's disease, unspecified

    • K50.90 - Crohn's disease, unspecified, without complications

  • K50.91 - Crohn's disease, unspecified, with complications

    • K50.911 - Crohn's disease, unspecified, with rectal bleeding

    • K50.912 - Crohn's disease, unspecified, with intestinal obstruction

    • K50.913 - Crohn's disease, unspecified, with fistula

    • K50.914 - Crohn's disease, unspecified, with abscess

    • K50.918 - Crohn's disease, unspecified, with other complication

    • K50.919 - Crohn's disease, unspecified, with unspecified complications

  • K51.0 - Ulcerative (chronic) pancolitis

    • K51.00 - Ulcerative (chronic) pancolitis without complications

  • K51.01 - Ulcerative (chronic) pancolitis with complications

    • K51.011 - Ulcerative (chronic) pancolitis with rectal bleeding

    • K51.012 - Ulcerative (chronic) pancolitis with intestinal obstruction

    • K51.013 - Ulcerative (chronic) pancolitis with fistula

    • K51.014 - Ulcerative (chronic) pancolitis with abscess

    • K51.018 - Ulcerative (chronic) pancolitis with other complication

    • K51.019 - Ulcerative (chronic) pancolitis with unspecified complications

  • K51.2 - Ulcerative (chronic) proctitis

    • K51.20 - Ulcerative (chronic) proctitis without complications

  • K51.21 - Ulcerative (chronic) proctitis with complications

    • K51.211 - Ulcerative (chronic) proctitis with rectal bleeding

    • K51.212 - Ulcerative (chronic) proctitis with intestinal obstruction

    • K51.213 - Ulcerative (chronic) proctitis with fistula

    • K51.214 - Ulcerative (chronic) proctitis with abscess

    • K51.218 - Ulcerative (chronic) proctitis with other complication

    • K51.219 - Ulcerative (chronic) proctitis with unspecified complications

  • K51.3 - Ulcerative (chronic) rectosigmoiditis

    • K51.30 - Ulcerative (chronic) rectosigmoiditis without complications

  • K51.31 - Ulcerative (chronic) rectosigmoiditis with complications

    • K51.311 - Ulcerative (chronic) rectosigmoiditis with rectal bleeding

    • K51.312 - Ulcerative (chronic) rectosigmoiditis with intestinal obstruction

    • K51.313 - Ulcerative (chronic) rectosigmoiditis with fistula

    • K51.314 - Ulcerative (chronic) rectosigmoiditis with abscess

    • K51.318 - Ulcerative (chronic) rectosigmoiditis with other complication

    • K51.319 - Ulcerative (chronic) rectosigmoiditis with unspecified complications

  • K51.4 - Inflammatory polyps of colon

    • K51.40 - Inflammatory polyps of colon without complications

  • K51.41 - Inflammatory polyps of colon with complications

    • K51.411 - Inflammatory polyps of colon with rectal bleeding

    • K51.412 - Inflammatory polyps of colon with intestinal obstruction

    • K51.413 - Inflammatory polyps of colon with fistula

    • K51.414 - Inflammatory polyps of colon with abscess

    • K51.418 - Inflammatory polyps of colon with other complication

    • K51.419 - Inflammatory polyps of colon with unspecified complications

  • K51.5 - Left sided colitis

    • K51.50 - Left sided colitis without complications

  • K51.51 - Left sided colitis with complications

    • K51.511 - Left sided colitis with rectal bleeding

    • K51.512 - Left sided colitis with intestinal obstruction

    • K51.513 - Left sided colitis with fistula

    • K51.514 - Left sided colitis with abscess

    • K51.518 - Left sided colitis with other complication

    • K51.519 - Left sided colitis with unspecified complications

  • K51.8 - Other ulcerative colitis

    • K51.80 - Other ulcerative colitis without complications

  • K51.81 - Other ulcerative colitis with complications

    • K51.811 - Other ulcerative colitis with rectal bleeding

    • K51.812 - Other ulcerative colitis with intestinal obstruction

    • K51.813 - Other ulcerative colitis with fistula

    • K51.814 - Other ulcerative colitis with abscess

    • K51.818 - Other ulcerative colitis with other complication

    • K51.819 - Other ulcerative colitis with unspecified complications

  • K51.9 - Ulcerative colitis, unspecified

    • K51.90 - Ulcerative colitis, unspecified, without complications

  • K51.91 - Ulcerative colitis, unspecified, with complications

    • K51.911 - Ulcerative colitis, unspecified with rectal bleeding

    • K51.912 - Ulcerative colitis, unspecified with intestinal obstruction

    • K51.913 - Ulcerative colitis, unspecified with fistula

    • K51.914 - Ulcerative colitis, unspecified with abscess

    • K51.918 - Ulcerative colitis, unspecified with other complication

    • K51.919 - Ulcerative colitis, unspecified with unspecified complications