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  3. Diagnosis Codes in MS-DRG 391 - Esophagitis, Gastroenteritis And Miscellaneous Digestive Disorders With MCC

Diagnosis Codes in MS-DRG 391 - Esophagitis, Gastroenteritis And Miscellaneous Digestive Disorders 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: Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC from October 1, 2024, through September 30, 2025.

MS-DRG: 391

MS-DRG Title: Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC

MCD: 06

Relative Weight: 1.2849 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: 1.28 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: 3.80 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.

  1. A05 - Other bacterial foodborne intoxications, not elsewhere
  2. A08 - Viral and other specified intestinal infections
  3. A08.1 - Acute gastroenteropathy due to Norwalk agent and oth
  4. A08.3 - Other viral enteritis
  5. B37.8 - Candidiasis of other sites
  6. B68 - Taeniasis
  7. B70 - Diphyllobothriasis and sparganosis
  8. B77 - Ascariasis
  9. B77.8 - Ascariasis with other complications
  10. B78 - Strongyloidiasis
  11. B81 - Other intestinal helminthiases, not elsewhere classifi
  12. B82 - Unspecified intestinal parasitism
  13. D18.0 - Hemangioma
  14. E73 - Lactose intolerance
  15. E74.1 - Disorders of fructose metabolism
  16. E74.3 - Other disorders of intestinal carbohydrate absorptio
  17. I77 - Other disorders of arteries and arterioles
  18. K20 - Esophagitis
  19. K20.8 - Other esophagitis
  20. K20.9 - Esophagitis, unspecified
  21. K21 - Gastro-esophageal reflux disease
  22. K21.0 - Gastro-esophageal reflux disease with esophagitis
  23. K22 - Other diseases of esophagus
  24. K22.8 - Other specified diseases of esophagus
  25. K29.0 - Acute gastritis
  26. K29.2 - Alcoholic gastritis
  27. K29.3 - Chronic superficial gastritis
  28. K29.4 - Chronic atrophic gastritis
  29. K29.5 - Unspecified chronic gastritis
  30. K29.6 - Other gastritis
  31. K29.7 - Gastritis, unspecified
  32. K29.8 - Duodenitis
  33. K29.9 - Gastroduodenitis, unspecified
  34. K31 - Other diseases of stomach and duodenum
  35. K31.8 - Other specified diseases of stomach and duodenum
  36. K31.81 - Angiodysplasia of stomach and duodenum
  37. K31.A - Gastric intestinal metaplasia
  38. K31.A1 - Gastric intestinal metaplasia without dysplasia
  39. K31.A2 - Gastric intestinal metaplasia with dysplasia
  40. K44 - Diaphragmatic hernia
  41. K52 - Other and unspecified noninfective gastroenteritis and
  42. K52.2 - Allergic and dietetic gastroenteritis and colitis
  43. K52.8 - Other specified noninfective gastroenteritis and col
  44. K52.83 - Microscopic colitis
  45. K57.0 - Diverticulitis of small intestine with perforation a
  46. K57.1 - Diverticular disease of small intestine without perf
  47. K57.2 - Diverticulitis of large intestine with perforation a
  48. K57.3 - Diverticular disease of large intestine without perf
  49. K57.4 - Diverticulitis of both small and large intestine wit
  50. K57.5 - Diverticular disease of both small and large intesti
  51. K57.8 - Diverticulitis of intestine, part unspecified, with
  52. K57.9 - Diverticular disease of intestine, part unspecified,
  53. K58 - Irritable bowel syndrome
  54. K59 - Other functional intestinal disorders
  55. K59.0 - Constipation
  56. K59.8 - Other specified functional intestinal disorders
  57. K90 - Intestinal malabsorption
  58. K90.4 - Other malabsorption due to intolerance
  59. K90.8 - Other intestinal malabsorption
  60. K90.82 - Short bowel syndrome
  61. K91 - Intraoperative and postprocedural complications and di
  62. K92.8 - Other specified diseases of the digestive system
  63. N80.5 - Endometriosis of intestine
  64. N80.51 - Endometriosis of the rectum
  65. N80.52 - Endometriosis of the sigmoid colon
  66. N80.53 - Endometriosis of the cecum
  67. N80.54 - Endometriosis of the appendix
  68. N80.55 - Endometriosis of other parts of the colon
  69. N80.56 - Endometriosis of the small intestine
  70. R10 - Abdominal and pelvic pain
  71. R10.1 - Pain localized to upper abdomen
  72. R10.3 - Pain localized to other parts of lower abdomen
  73. R10.8 - Other abdominal pain
  74. R10.81 - Abdominal tenderness
  75. R10.82 - Rebound abdominal tenderness
  76. R11 - Nausea and vomiting
  77. R11.1 - Vomiting
  78. R13 - Aphagia and dysphagia
  79. R13.1 - Dysphagia
  80. R14 - Flatulence and related conditions
  81. R15 - Fecal incontinence
  82. R19 - Other symptoms and signs involving the digestive syste
  83. R19.0 - Intra-abdominal and pelvic swelling, mass and lump
  84. R19.1 - Abnormal bowel sounds
  85. R93 - Abnormal findings on diagnostic imaging of other body

  • -

    • A09 - Infectious gastroenteritis and colitis, unspecified

    • B79 - Trichuriasis

    • B80 - Enterobiasis

    • K23 - Disorders of esophagus in diseases classified elsewhere

    • K30 - Functional dyspepsia

    • R12 - Heartburn

  • A05 - Other bacterial foodborne intoxications, not elsewhere classified

    • A05.9 - Bacterial foodborne intoxication, unspecified

  • A08 - Viral and other specified intestinal infections

    • A08.0 - Rotaviral enteritis

    • A08.2 - Adenoviral enteritis

    • A08.4 - Viral intestinal infection, unspecified

    • A08.8 - Other specified intestinal infections

  • A08.1 - Acute gastroenteropathy due to Norwalk agent and other small round viruses

    • A08.11 - Acute gastroenteropathy due to Norwalk agent

    • A08.19 - Acute gastroenteropathy due to other small round viruses

  • A08.3 - Other viral enteritis

    • A08.31 - Calicivirus enteritis

    • A08.32 - Astrovirus enteritis

    • A08.39 - Other viral enteritis

  • B37.8 - Candidiasis of other sites

  • B68 - Taeniasis

    • B68.0 - Taenia solium taeniasis

    • B68.1 - Taenia saginata taeniasis

    • B68.9 - Taeniasis, unspecified

  • B70 - Diphyllobothriasis and sparganosis

    • B70.0 - Diphyllobothriasis

  • B77 - Ascariasis

    • B77.0 - Ascariasis with intestinal complications

    • B77.9 - Ascariasis, unspecified

  • B77.8 - Ascariasis with other complications

    • B77.81 - Ascariasis pneumonia

    • B77.89 - Ascariasis with other complications

  • B78 - Strongyloidiasis

    • B78.0 - Intestinal strongyloidiasis

    • B78.7 - Disseminated strongyloidiasis

    • B78.9 - Strongyloidiasis, unspecified

  • B81 - Other intestinal helminthiases, not elsewhere classified

    • B81.0 - Anisakiasis

    • B81.1 - Intestinal capillariasis

    • B81.2 - Trichostrongyliasis

    • B81.3 - Intestinal angiostrongyliasis

    • B81.8 - Other specified intestinal helminthiases

  • B82 - Unspecified intestinal parasitism

    • B82.0 - Intestinal helminthiasis, unspecified

    • B82.9 - Intestinal parasitism, unspecified

  • D18.0 - Hemangioma

    • D18.03 - Hemangioma of intra-abdominal structures

  • E73 - Lactose intolerance

    • E73.0 - Congenital lactase deficiency

    • E73.1 - Secondary lactase deficiency

    • E73.8 - Other lactose intolerance

    • E73.9 - Lactose intolerance, unspecified

  • E74.1 - Disorders of fructose metabolism

    • E74.10 - Disorder of fructose metabolism, unspecified

    • E74.11 - Essential fructosuria

    • E74.12 - Hereditary fructose intolerance

    • E74.19 - Other disorders of fructose metabolism

  • E74.3 - Other disorders of intestinal carbohydrate absorption

    • E74.31 - Sucrase-isomaltase deficiency

    • E74.39 - Other disorders of intestinal carbohydrate absorption

  • I77 - Other disorders of arteries and arterioles

    • I77.4 - Celiac artery compression syndrome

  • K20 - Esophagitis

    • K20.0 - Eosinophilic esophagitis

  • K20.8 - Other esophagitis

    • K20.80 - Other esophagitis without bleeding

  • K20.9 - Esophagitis, unspecified

    • K20.90 - Esophagitis, unspecified without bleeding

  • K21 - Gastro-esophageal reflux disease

    • K21.9 - Gastro-esophageal reflux disease without esophagitis

  • K21.0 - Gastro-esophageal reflux disease with esophagitis

    • K21.00 - Gastro-esophageal reflux disease with esophagitis, without bleeding

  • K22 - Other diseases of esophagus

    • K22.0 - Achalasia of cardia

    • K22.2 - Esophageal obstruction

    • K22.4 - Dyskinesia of esophagus

    • K22.5 - Diverticulum of esophagus, acquired

    • K22.9 - Disease of esophagus, unspecified

  • K22.8 - Other specified diseases of esophagus

    • K22.81 - Esophageal polyp

    • K22.82 - Esophagogastric junction polyp

    • K22.89 - Other specified disease of esophagus

  • K29.0 - Acute gastritis

    • K29.00 - Acute gastritis without bleeding

  • K29.2 - Alcoholic gastritis

    • K29.20 - Alcoholic gastritis without bleeding

  • K29.3 - Chronic superficial gastritis

    • K29.30 - Chronic superficial gastritis without bleeding

  • K29.4 - Chronic atrophic gastritis

    • K29.40 - Chronic atrophic gastritis without bleeding

  • K29.5 - Unspecified chronic gastritis

    • K29.50 - Unspecified chronic gastritis without bleeding

  • K29.6 - Other gastritis

    • K29.60 - Other gastritis without bleeding

  • K29.7 - Gastritis, unspecified

    • K29.70 - Gastritis, unspecified, without bleeding

  • K29.8 - Duodenitis

    • K29.80 - Duodenitis without bleeding

  • K29.9 - Gastroduodenitis, unspecified

    • K29.90 - Gastroduodenitis, unspecified, without bleeding

  • K31 - Other diseases of stomach and duodenum

    • K31.0 - Acute dilatation of stomach

    • K31.2 - Hourglass stricture and stenosis of stomach

    • K31.3 - Pylorospasm, not elsewhere classified

    • K31.4 - Gastric diverticulum

    • K31.6 - Fistula of stomach and duodenum

    • K31.9 - Disease of stomach and duodenum, unspecified

  • K31.8 - Other specified diseases of stomach and duodenum

    • K31.83 - Achlorhydria

    • K31.84 - Gastroparesis

    • K31.89 - Other diseases of stomach and duodenum

  • K31.81 - Angiodysplasia of stomach and duodenum

    • K31.819 - Angiodysplasia of stomach and duodenum without bleeding

  • K31.A - Gastric intestinal metaplasia

    • K31.A0 - Gastric intestinal metaplasia, unspecified

  • K31.A1 - Gastric intestinal metaplasia without dysplasia

    • K31.A11 - Gastric intestinal metaplasia without dysplasia, involving the antrum

    • K31.A12 - Gastric intestinal metaplasia without dysplasia, involving the body (corpus)

    • K31.A13 - Gastric intestinal metaplasia without dysplasia, involving the fundus

    • K31.A14 - Gastric intestinal metaplasia without dysplasia, involving the cardia

    • K31.A15 - Gastric intestinal metaplasia without dysplasia, involving multiple sites

    • K31.A19 - Gastric intestinal metaplasia without dysplasia, unspecified site

  • K31.A2 - Gastric intestinal metaplasia with dysplasia

    • K31.A21 - Gastric intestinal metaplasia with low grade dysplasia

    • K31.A22 - Gastric intestinal metaplasia with high grade dysplasia

    • K31.A29 - Gastric intestinal metaplasia with dysplasia, unspecified

  • K44 - Diaphragmatic hernia

    • K44.0 - Diaphragmatic hernia with obstruction, without gangrene

    • K44.9 - Diaphragmatic hernia without obstruction or gangrene

  • K52 - Other and unspecified noninfective gastroenteritis and colitis

    • K52.3 - Indeterminate colitis

    • K52.9 - Noninfective gastroenteritis and colitis, unspecified

  • K52.2 - Allergic and dietetic gastroenteritis and colitis

    • K52.21 - Food protein-induced enterocolitis syndrome

    • K52.22 - Food protein-induced enteropathy

    • K52.29 - Other allergic and dietetic gastroenteritis and colitis

  • K52.8 - Other specified noninfective gastroenteritis and colitis

    • K52.81 - Eosinophilic gastritis or gastroenteritis

    • K52.82 - Eosinophilic colitis

    • K52.89 - Other specified noninfective gastroenteritis and colitis

  • K52.83 - Microscopic colitis

  • K57.0 - Diverticulitis of small intestine with perforation and abscess

    • K57.00 - Diverticulitis of small intestine with perforation and abscess without bleeding

  • K57.1 - Diverticular disease of small intestine without perforation or abscess

    • K57.10 - Diverticulosis of small intestine without perforation or abscess without bleeding

    • K57.12 - Diverticulitis of small intestine without perforation or abscess without bleeding

  • K57.2 - Diverticulitis of large intestine with perforation and abscess

    • K57.20 - Diverticulitis of large intestine with perforation and abscess without bleeding

  • K57.3 - Diverticular disease of large intestine without perforation or abscess

    • K57.30 - Diverticulosis of large intestine without perforation or abscess without bleeding

    • K57.32 - Diverticulitis of large intestine without perforation or abscess without bleeding

  • K57.4 - Diverticulitis of both small and large intestine with perforation and abscess

    • K57.40 - Diverticulitis of both small and large intestine with perforation and abscess without bleeding

  • K57.5 - Diverticular disease of both small and large intestine without perforation or abscess

    • K57.50 - Diverticulosis of both small and large intestine without perforation or abscess without bleeding

    • K57.52 - Diverticulitis of both small and large intestine without perforation or abscess without bleeding

  • K57.8 - Diverticulitis of intestine, part unspecified, with perforation and abscess

    • K57.80 - Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding

  • K57.9 - Diverticular disease of intestine, part unspecified, without perforation or abscess

    • K57.90 - Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding

    • K57.92 - Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding

  • K58 - Irritable bowel syndrome

    • K58.0 - Irritable bowel syndrome with diarrhea

    • K58.1 - Irritable bowel syndrome with constipation

    • K58.2 - Mixed irritable bowel syndrome

    • K58.8 - Other irritable bowel syndrome

    • K58.9 - Irritable bowel syndrome, unspecified

  • K59 - Other functional intestinal disorders

    • K59.1 - Functional diarrhea

    • K59.2 - Neurogenic bowel, not elsewhere classified

    • K59.4 - Anal spasm

    • K59.9 - Functional intestinal disorder, unspecified

  • K59.0 - Constipation

    • K59.00 - Constipation, unspecified

    • K59.01 - Slow transit constipation

    • K59.02 - Outlet dysfunction constipation

    • K59.03 - Drug induced constipation

    • K59.04 - Chronic idiopathic constipation

    • K59.09 - Other constipation

  • K59.8 - Other specified functional intestinal disorders

    • K59.81 - Ogilvie syndrome

    • K59.89 - Other specified functional intestinal disorders

  • K90 - Intestinal malabsorption

    • K90.0 - Celiac disease

    • K90.1 - Tropical sprue

    • K90.2 - Blind loop syndrome, not elsewhere classified

    • K90.3 - Pancreatic steatorrhea

    • K90.9 - Intestinal malabsorption, unspecified

  • K90.4 - Other malabsorption due to intolerance

    • K90.41 - Non-celiac gluten sensitivity

    • K90.49 - Malabsorption due to intolerance, not elsewhere classified

  • K90.8 - Other intestinal malabsorption

    • K90.83 - Intestinal failure

    • K90.89 - Other intestinal malabsorption

  • K90.82 - Short bowel syndrome

    • K90.821 - Short bowel syndrome with colon in continuity

    • K90.822 - Short bowel syndrome without colon in continuity

    • K90.829 - Short bowel syndrome, unspecified

  • K91 - Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified

    • K91.0 - Vomiting following gastrointestinal surgery

    • K91.1 - Postgastric surgery syndromes

    • K91.2 - Postsurgical malabsorption, not elsewhere classified

  • K92.8 - Other specified diseases of the digestive system

    • K92.81 - Gastrointestinal mucositis (ulcerative)

  • N80.5 - Endometriosis of intestine

    • N80.50 - Endometriosis of intestine, unspecified

  • N80.51 - Endometriosis of the rectum

    • N80.511 - Superficial endometriosis of the rectum

    • N80.512 - Deep endometriosis of the rectum

    • N80.519 - Endometriosis of the rectum, unspecified depth

  • N80.52 - Endometriosis of the sigmoid colon

    • N80.521 - Superficial endometriosis of the sigmoid colon

    • N80.522 - Deep endometriosis of the sigmoid colon

    • N80.529 - Endometriosis of the sigmoid colon, unspecified depth

  • N80.53 - Endometriosis of the cecum

    • N80.531 - Superficial endometriosis of the cecum

    • N80.532 - Deep endometriosis of the cecum

    • N80.539 - Endometriosis of the cecum, unspecified depth

  • N80.54 - Endometriosis of the appendix

    • N80.541 - Superficial endometriosis of the appendix

    • N80.542 - Deep endometriosis of the appendix

    • N80.549 - Endometriosis of the appendix, unspecified depth

  • N80.55 - Endometriosis of other parts of the colon

    • N80.551 - Superficial endometriosis of other parts of the colon

    • N80.552 - Deep endometriosis of other parts of the colon

    • N80.559 - Endometriosis of other parts of the colon, unspecified depth

  • N80.56 - Endometriosis of the small intestine

    • N80.561 - Superficial endometriosis of the small intestine

    • N80.562 - Deep endometriosis of the small intestine

    • N80.569 - Endometriosis of the small intestine, unspecified depth

  • R10 - Abdominal and pelvic pain

    • R10.0 - Acute abdomen

    • R10.2 - Pelvic and perineal pain

    • R10.9 - Unspecified abdominal pain

  • R10.1 - Pain localized to upper abdomen

    • R10.10 - Upper abdominal pain, unspecified

    • R10.11 - Right upper quadrant pain

    • R10.12 - Left upper quadrant pain

    • R10.13 - Epigastric pain

  • R10.3 - Pain localized to other parts of lower abdomen

    • R10.30 - Lower abdominal pain, unspecified

    • R10.31 - Right lower quadrant pain

    • R10.32 - Left lower quadrant pain

    • R10.33 - Periumbilical pain

  • R10.8 - Other abdominal pain

  • R10.81 - Abdominal tenderness

    • R10.811 - Right upper quadrant abdominal tenderness

    • R10.812 - Left upper quadrant abdominal tenderness

    • R10.813 - Right lower quadrant abdominal tenderness

    • R10.814 - Left lower quadrant abdominal tenderness

    • R10.815 - Periumbilic abdominal tenderness

    • R10.816 - Epigastric abdominal tenderness

    • R10.817 - Generalized abdominal tenderness

    • R10.819 - Abdominal tenderness, unspecified site

  • R10.82 - Rebound abdominal tenderness

    • R10.821 - Right upper quadrant rebound abdominal tenderness

    • R10.822 - Left upper quadrant rebound abdominal tenderness

    • R10.823 - Right lower quadrant rebound abdominal tenderness

    • R10.824 - Left lower quadrant rebound abdominal tenderness

    • R10.825 - Periumbilic rebound abdominal tenderness

    • R10.826 - Epigastric rebound abdominal tenderness

    • R10.827 - Generalized rebound abdominal tenderness

    • R10.829 - Rebound abdominal tenderness, unspecified site

  • R11 - Nausea and vomiting

    • R11.0 - Nausea

    • R11.2 - Nausea with vomiting, unspecified

  • R11.1 - Vomiting

  • R13 - Aphagia and dysphagia

  • R13.1 - Dysphagia

    • R13.10 - Dysphagia, unspecified

    • R13.11 - Dysphagia, oral phase

    • R13.12 - Dysphagia, oropharyngeal phase

    • R13.13 - Dysphagia, pharyngeal phase

    • R13.14 - Dysphagia, pharyngoesophageal phase

    • R13.19 - Other dysphagia

  • R15 - Fecal incontinence

    • R15.0 - Incomplete defecation

    • R15.1 - Fecal smearing

    • R15.2 - Fecal urgency

    • R15.9 - Full incontinence of feces

  • R19 - Other symptoms and signs involving the digestive system and abdomen

    • R19.2 - Visible peristalsis

    • R19.4 - Change in bowel habit

    • R19.5 - Other fecal abnormalities

    • R19.7 - Diarrhea, unspecified

    • R19.8 - Other specified symptoms and signs involving the digestive system and abdomen

  • R19.0 - Intra-abdominal and pelvic swelling, mass and lump

    • R19.00 - Intra-abdominal and pelvic swelling, mass and lump, unspecified site

    • R19.01 - Right upper quadrant abdominal swelling, mass and lump

    • R19.02 - Left upper quadrant abdominal swelling, mass and lump

    • R19.03 - Right lower quadrant abdominal swelling, mass and lump

    • R19.04 - Left lower quadrant abdominal swelling, mass and lump

    • R19.05 - Periumbilic swelling, mass or lump

    • R19.06 - Epigastric swelling, mass or lump

    • R19.07 - Generalized intra-abdominal and pelvic swelling, mass and lump

    • R19.09 - Other intra-abdominal and pelvic swelling, mass and lump

  • R19.1 - Abnormal bowel sounds

    • R19.11 - Absent bowel sounds

    • R19.12 - Hyperactive bowel sounds

    • R19.15 - Other abnormal bowel sounds

  • R93 - Abnormal findings on diagnostic imaging of other body structures

    • R93.3 - Abnormal findings on diagnostic imaging of other parts of digestive tract

    • R93.5 - Abnormal findings on diagnostic imaging of other abdominal regions, including retroperitoneum