Gastroenterology · ICD-10-CM

Gastroenterology ICD-10 codes.

The 27 diagnosis codes a GI practice's callers bring most often, as published in the 2025 ICD-10-CM files.

2025 files

Right, left, bilateral and initial-encounter characters change the code; unspecified codes are denied where a specific one exists.

The codes.

ICD-10-CM codes as published in the 2025 files. Laterality, encounter and severity characters change a code's meaning; the practice's coder confirms every code against the current file.

Gastroenterology ICD-10-CM codes
ICD-10-CMDescription
K21.9Gastro-esophageal reflux disease without esophagitis
K21.00Gastro-esophageal reflux disease with esophagitis, without bleeding
K29.70Gastritis, unspecified, without bleeding
K58.0Irritable bowel syndrome with diarrhea
K58.1Irritable bowel syndrome with constipation
K57.30Diverticulosis of large intestine without perforation or abscess without bleeding
K57.32Diverticulitis of large intestine without perforation or abscess without bleeding
K50.90Crohn's disease, unspecified, without complications
K51.90Ulcerative colitis, unspecified, without complications
K76.0Fatty (change of) liver, not elsewhere classified
K74.60Unspecified cirrhosis of liver
B18.2Chronic viral hepatitis C
K90.0Celiac disease
K22.70Barrett's esophagus without dysplasia
K92.1Melena
K92.2Gastrointestinal hemorrhage, unspecified
K62.5Hemorrhage of anus and rectum
K64.9Unspecified hemorrhoids
R10.9Unspecified abdominal pain
R10.13Epigastric pain
R19.7Diarrhea, unspecified
K59.00Constipation, unspecified
R13.10Dysphagia, unspecified
R11.2Nausea with vomiting, unspecified
Z12.11Encounter for screening for malignant neoplasm of colon
Z86.010Personal history of colonic polyps
D12.6Benign neoplasm of colon, unspecified

CPT codes and wRVUsGlobal periodsAll gastroenterology references

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