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Gastroenterology ICD-10 Cheat Sheet
55 most-used billable ICD-10-CM diagnosis codes (of 219 common gastroenterology codes)
findicd10.com
- B18.2Chronic viral hepatitis C
- 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
- D12.0Benign neoplasm of cecum
- D12.1Benign neoplasm of appendix
- D12.2Benign neoplasm of ascending colon
- D12.3Benign neoplasm of transverse colon
- 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
- I85.00Esophageal varices without bleeding
- K20.0Eosinophilic esophagitis
- 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
- 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
- K70.30Alcoholic cirrhosis of liver without ascites
- K70.31Alcoholic cirrhosis of liver with ascites
- K74.60Unspecified cirrhosis of liver
- K74.69Other cirrhosis of liver
- K80.50Calculus of bile duct without cholangitis or cholecystitis without obstruction
- K83.1Obstruction of bile duct
- K86.2Cyst of pancreas
- K86.3Pseudocyst of pancreas
- K92.1Melena
- K92.2Gastrointestinal hemorrhage, unspecified
- R07.1Chest pain on breathing
- R07.81Pleurodynia
- R07.89Other chest pain
- R07.9Chest pain, unspecified
- R10.0Acute abdomen
- R10.10Upper abdominal pain, unspecified
- R10.11Right upper quadrant pain
- R10.12Left upper quadrant pain
- R93.3Abnormal findings on diagnostic imaging of other parts of digestive tract
- R94.5Abnormal results of liver function studies
- 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
- Z12.11Encounter for screening for malignant neoplasm of colon
- Z80.0Family history of malignant neoplasm of digestive organs
- Z85.030Personal history of malignant carcinoid tumor of large intestine
- Z85.038Personal history of other malignant neoplasm of large intestine
Excludes1 traps — never code together
- K83.1✗ obstruction of bile duct with cholelithiasis (K80.-)
- K92.2✗ diverticular disease with hemorrhage (K57.-)
- C15.5✗ malignant neoplasm of cardio-esophageal junction (C16.0)
- D12.1✗ benign carcinoid tumor of the appendix (D3A.020)
- D50.0✗ acute posthemorrhagic anemia (D62)
- K92.1✗ occult blood in feces (R19.5)
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Need the full list? All 219 common gastroenterology codes · Check a claim in the ICD-10 validator
Codes reflect the FY2026 ICD-10-CM code set. Always verify against current coding guidelines before billing.