Gastroenterology Common Codes

219 diagnosis codes grouped by ICD-10 chapter

A00-B99Infectious and Parasitic Diseases1 code

B18.2Chronic viral hepatitis C

C00-D49Neoplasms16 codes

C15.3Malignant neoplasm of upper third of esophagus
C15.4Malignant neoplasm of middle third of esophagus
C15.5Malignant neoplasm of lower third of esophagus
C15.8Malignant neoplasm of overlapping sites of esophagus
C15.9Malignant neoplasm of esophagus, unspecified
D12.0Benign neoplasm of cecum
D12.1Benign neoplasm of appendix
D12.2Benign neoplasm of ascending colon
D12.3Benign neoplasm of transverse colon
D12.4Benign neoplasm of descending colon
D12.5Benign neoplasm of sigmoid colon
D12.6Benign neoplasm of colon, unspecified
D12.7Benign neoplasm of rectosigmoid junction
D12.8Benign neoplasm of rectum
D12.9Benign neoplasm of anus and anal canal
D13.1Benign neoplasm of stomach

D50-D89Blood and Immune Disorders7 codes

D50.0Iron deficiency anemia secondary to blood loss (chronic)
D50.1Sideropenic dysphagia
D50.8Other iron deficiency anemias
D50.9Iron deficiency anemia, unspecified
D64.81Anemia due to antineoplastic chemotherapy
D64.89Other specified anemias
D64.9Anemia, unspecified

I00-I99Circulatory System Diseases1 code

I85.00Esophageal varices without bleeding

K00-K95Digestive System Diseases139 codes

K92.1Melena
K92.2Gastrointestinal hemorrhage, unspecified
K80.50Calculus of bile duct without cholangitis or cholecystitis without obstruction
K83.1Obstruction of bile duct
K86.2Cyst of pancreas
K86.3Pseudocyst of pancreas
K44.9Diaphragmatic hernia without obstruction or gangrene
K50.00Crohn's disease of small intestine without complications
K50.011Crohn's disease of small intestine with rectal bleeding
K50.012Crohn's disease of small intestine with intestinal obstruction
K50.013Crohn's disease of small intestine with fistula
K50.014Crohn's disease of small intestine with abscess
K50.018Crohn's disease of small intestine with other complication
K50.019Crohn's disease of small intestine with unspecified complications
K50.10Crohn's disease of large intestine without complications
K50.111Crohn's disease of large intestine with rectal bleeding
K50.112Crohn's disease of large intestine with intestinal obstruction
K50.113Crohn's disease of large intestine with fistula
K50.114Crohn's disease of large intestine with abscess
K50.118Crohn's disease of large intestine with other complication
K50.119Crohn's disease of large intestine with unspecified complications
K50.80Crohn's disease of both small and large intestine without complications
K50.811Crohn's disease of both small and large intestine with rectal bleeding
K50.812Crohn's disease of both small and large intestine with intestinal obstruction
K50.813Crohn's disease of both small and large intestine with fistula
K50.814Crohn's disease of both small and large intestine with abscess
K50.818Crohn's disease of both small and large intestine with other complication
K50.819Crohn's disease of both small and large intestine with unspecified complications
K50.90Crohn's disease, unspecified, without complications
K50.911Crohn's disease, unspecified, with rectal bleeding
K50.912Crohn's disease, unspecified, with intestinal obstruction
K50.913Crohn's disease, unspecified, with fistula
K50.914Crohn's disease, unspecified, with abscess
K50.918Crohn's disease, unspecified, with other complication
K50.919Crohn's disease, unspecified, with unspecified complications
K51.00Ulcerative (chronic) pancolitis without complications
K51.011Ulcerative (chronic) pancolitis with rectal bleeding
K51.012Ulcerative (chronic) pancolitis with intestinal obstruction
K51.013Ulcerative (chronic) pancolitis with fistula
K51.014Ulcerative (chronic) pancolitis with abscess
K51.018Ulcerative (chronic) pancolitis with other complication
K51.019Ulcerative (chronic) pancolitis with unspecified complications
K51.20Ulcerative (chronic) proctitis without complications
K51.211Ulcerative (chronic) proctitis with rectal bleeding
K51.212Ulcerative (chronic) proctitis with intestinal obstruction
K51.213Ulcerative (chronic) proctitis with fistula
K51.214Ulcerative (chronic) proctitis with abscess
K51.218Ulcerative (chronic) proctitis with other complication
K51.219Ulcerative (chronic) proctitis with unspecified complications
K51.30Ulcerative (chronic) rectosigmoiditis without complications
K51.311Ulcerative (chronic) rectosigmoiditis with rectal bleeding
K51.312Ulcerative (chronic) rectosigmoiditis with intestinal obstruction
K51.313Ulcerative (chronic) rectosigmoiditis with fistula
K51.314Ulcerative (chronic) rectosigmoiditis with abscess
K51.318Ulcerative (chronic) rectosigmoiditis with other complication
K51.319Ulcerative (chronic) rectosigmoiditis with unspecified complications
K51.40Inflammatory polyps of colon without complications
K51.411Inflammatory polyps of colon with rectal bleeding
K51.412Inflammatory polyps of colon with intestinal obstruction
K51.413Inflammatory polyps of colon with fistula
K51.414Inflammatory polyps of colon with abscess
K51.418Inflammatory polyps of colon with other complication
K51.419Inflammatory polyps of colon with unspecified complications
K51.50Left sided colitis without complications
K51.511Left sided colitis with rectal bleeding
K51.512Left sided colitis with intestinal obstruction
K51.513Left sided colitis with fistula
K51.514Left sided colitis with abscess
K51.518Left sided colitis with other complication
K51.519Left sided colitis with unspecified complications
K51.80Other ulcerative colitis without complications
K51.811Other ulcerative colitis with rectal bleeding
K51.812Other ulcerative colitis with intestinal obstruction
K51.813Other ulcerative colitis with fistula
K51.814Other ulcerative colitis with abscess
K51.818Other ulcerative colitis with other complication
K51.819Other ulcerative colitis with unspecified complications
K51.90Ulcerative colitis, unspecified, without complications
K51.911Ulcerative colitis, unspecified with rectal bleeding
K51.912Ulcerative colitis, unspecified with intestinal obstruction
K51.913Ulcerative colitis, unspecified with fistula
K51.914Ulcerative colitis, unspecified with abscess
K51.918Ulcerative colitis, unspecified with other complication
K51.919Ulcerative colitis, unspecified with unspecified complications
K52.89Other specified noninfective gastroenteritis and colitis
K52.9Noninfective gastroenteritis and colitis, unspecified
K57.30Diverticulosis of large intestine without perforation or abscess without bleeding
K58.0Irritable bowel syndrome with diarrhea
K58.9Irritable bowel syndrome without diarrhea
K59.00Constipation, unspecified
K59.01Slow transit constipation
K59.02Outlet dysfunction constipation
K59.09Other constipation
K62.5Hemorrhage of anus and rectum
K63.0Abscess of intestine
K63.1Perforation of intestine (nontraumatic)
K63.2Fistula of intestine
K63.3Ulcer of intestine
K63.4Enteroptosis
K63.5Polyp of colon
K63.81Dieulafoy lesion of intestine
K63.89Other specified diseases of intestine
K64.0First degree hemorrhoids
K64.1Second degree hemorrhoids
K64.2Third degree hemorrhoids
K64.3Fourth degree hemorrhoids
K64.8Other hemorrhoids
K64.9Unspecified hemorrhoids
K20.0Eosinophilic esophagitis
K20.8Other esophagitis
K20.9Esophagitis, unspecified
K21.0Gastro-esophageal reflux disease with esophagitis
K21.9Gastro-esophageal reflux disease without esophagitis
K22.2Esophageal obstruction
K22.70Barrett's esophagus without dysplasia
K22.710Barrett's esophagus with low grade dysplasia
K22.711Barrett's esophagus with high grade dysplasia
K22.719Barrett's esophagus with dysplasia, unspecified
K25.9Gastric ulcer, unspecified as acute or chronic, without hemorrhage or perforation
K29.40Chronic atrophic gastritis without bleeding
K30Functional dyspepsia
K31.0Acute dilatation of stomach
K31.1Adult hypertrophic pyloric stenosis
K31.2Hourglass stricture and stenosis of stomach
K31.3Pylorospasm, not elsewhere classified
K31.4Gastric diverticulum
K31.5Obstruction of duodenum
K31.6Fistula of stomach and duodenum
K31.7Polyp of stomach and duodenum
K31.811Angiodysplasia of stomach and duodenum with bleeding
K31.819Angiodysplasia of stomach and duodenum without bleeding
K31.82Dieulafoy lesion (hemorrhagic) of stomach and duodenum
K31.83Achlorhydria
K31.84Gastroparesis
K31.89Other diseases of stomach and duodenum
K70.30Alcoholic cirrhosis of liver without ascites
K70.31Alcoholic cirrhosis of liver with ascites
K74.60Unspecified cirrhosis of liver
K74.69Other cirrhosis of liver

R00-R99Symptoms and Abnormal Findings24 codes

R93.3Abnormal findings on diagnostic imaging of other parts of digestive tract
R94.5Abnormal results of liver function studies
R07.1Chest pain on breathing
R07.81Pleurodynia
R07.89Other chest pain
R07.9Chest pain, unspecified
R74.0Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]
R10.0Acute abdomen
R10.10Upper abdominal pain, unspecified
R10.11Right upper quadrant pain
R10.12Left upper quadrant pain
R10.13Epigastric pain
R10.2Pelvic and perineal pain
R10.30Lower abdominal pain, unspecified
R10.31Right lower quadrant pain
R10.32Left lower quadrant pain
R10.33Periumbilical pain
R10.84Generalized abdominal pain
R10.9Unspecified abdominal pain
R13.0Aphagia
R13.10Dysphagia, unspecified
R19.5Other fecal abnormalities
R19.7Diarrhea, unspecified
R19.8Other specified symptoms and signs involving the digestive system and abdomen

S00-T88Injury, Poisoning and External Causes24 codes

T18.100AUnspecified foreign body in esophagus causing compression of trachea, initial encounter
T18.100DUnspecified foreign body in esophagus causing compression of trachea, subsequent encounter
T18.100SUnspecified foreign body in esophagus causing compression of trachea, sequela
T18.108AUnspecified foreign body in esophagus causing other injury, initial encounter
T18.108DUnspecified foreign body in esophagus causing other injury, subsequent encounter
T18.108SUnspecified foreign body in esophagus causing other injury, sequela
T18.110AGastric contents in esophagus causing compression of trachea, initial encounter
T18.110DGastric contents in esophagus causing compression of trachea, subsequent encounter
T18.110SGastric contents in esophagus causing compression of trachea, sequela
T18.118AGastric contents in esophagus causing other injury, initial encounter
T18.118DGastric contents in esophagus causing other injury, subsequent encounter
T18.118SGastric contents in esophagus causing other injury, sequela
T18.120AFood in esophagus causing compression of trachea, initial encounter
T18.120DFood in esophagus causing compression of trachea, subsequent encounter
T18.120SFood in esophagus causing compression of trachea, sequela
T18.128AFood in esophagus causing other injury, initial encounter
T18.128DFood in esophagus causing other injury, subsequent encounter
T18.128SFood in esophagus causing other injury, sequela
T18.190AOther foreign object in esophagus causing compression of trachea, initial encounter
T18.190DOther foreign object in esophagus causing compression of trachea, subsequent encounter
T18.190SOther foreign object in esophagus causing compression of trachea, sequela
T18.198AOther foreign object in esophagus causing other injury, initial encounter
T18.198DOther foreign object in esophagus causing other injury, subsequent encounter
T18.198SOther foreign object in esophagus causing other injury, sequela

Z00-Z99Factors Influencing Health Status7 codes

Z80.0Family history of malignant neoplasm of digestive organs
Z83.71Family history of colonic polyps
Z85.030Personal history of malignant carcinoid tumor of large intestine
Z85.038Personal history of other malignant neoplasm of large intestine
Z86.010Personal history of colonic polyps
Z87.19Personal history of other diseases of the digestive system
Z12.11Encounter for screening for malignant neoplasm of colon

These codes represent commonly used diagnoses in gastroenterology. Always verify code accuracy for specific clinical scenarios.