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ICD-10-CM category

K31: Other diseases of stomach and duodenum

30 subcodes · 25 billable · Look up any code with the ICD-10 search

Codes under K31 (Other diseases of stomach and duodenum). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

CodeDescriptionBillable
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✓
K31.8Other specified diseases of stomach and duodenum—
K31.9Disease of stomach and duodenum, unspecified✓
K31.81Angiodysplasia of stomach and duodenum—
K31.82Dieulafoy lesion (hemorrhagic) of stomach and duodenum✓
K31.83Achlorhydria✓
K31.84Gastroparesis✓
K31.89Other diseases of stomach and duodenum✓
K31.811Angiodysplasia of stomach and duodenum with bleeding✓
K31.819Angiodysplasia of stomach and duodenum without bleeding✓
K31.AGastric intestinal metaplasia—
K31.A0Gastric intestinal metaplasia, unspecified✓
K31.A1Gastric intestinal metaplasia without dysplasia—
K31.A2Gastric intestinal metaplasia with dysplasia—
K31.A11Gastric intestinal metaplasia without dysplasia, involving the antrum✓
K31.A12Gastric intestinal metaplasia without dysplasia, involving the body (corpus)✓
K31.A13Gastric intestinal metaplasia without dysplasia, involving the fundus✓
K31.A14Gastric intestinal metaplasia without dysplasia, involving the cardia✓
K31.A15Gastric intestinal metaplasia without dysplasia, involving multiple sites✓
K31.A19Gastric intestinal metaplasia without dysplasia, unspecified site✓
K31.A21Gastric intestinal metaplasia with low grade dysplasia✓
K31.A22Gastric intestinal metaplasia with high grade dysplasia✓
K31.A29Gastric intestinal metaplasia with dysplasia, unspecified✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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