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K63.3 Ulcer of intestine
BackK63Other diseases of intestineCategory8 →K63.0Abscess of intestineCategoryK63.1Perforation of intestine (nontraumatic)CategoryK63.2Fistula of intestineCategoryK63.3Ulcer of intestineCategoryK63.4EnteroptosisCategoryK63.5Polyp of colonCategoryK63.8Other specified diseases of intestineCategory3 →K63.81Dieulafoy lesion of intestineCategoryK63.82Intestinal microbial overgrowthCategory3 →K63.821Small intestinal bacterial overgrowthCategory3 →K63.8211Small intestinal bacterial overgrowth, hydrogen-subtypeCategoryK63.8212Small intestinal bacterial overgrowth, hydrogen sulfide-subtypeCategoryK63.8219Small intestinal bacterial overgrowth, unspecifiedCategoryK63.822Small intestinal fungal overgrowthCategoryK63.829Intestinal methanogen overgrowth, unspecifiedCategoryK63.89Other specified diseases of intestineCategoryK63.9Disease of intestine, unspecifiedCategory
CategoryCODABLE
K63.3
Ulcer of intestine
EXAMPLES
Primary ulcer of small intestine
EXCLUDES
Excludes1: duodenal ulcer (K26.-)
gastrointestinal ulcer (K28.-)
gastrojejunal ulcer (K28.-)
jejunal ulcer (K28.-)
peptic ulcer, site unspecified (K27.-)
ulcer of intestine with perforation (K63.1)
ulcer of anus or rectum (K62.6)
ulcerative colitis (K51.-)
gastrointestinal ulcer (K28.-)
gastrojejunal ulcer (K28.-)
jejunal ulcer (K28.-)
peptic ulcer, site unspecified (K27.-)
ulcer of intestine with perforation (K63.1)
ulcer of anus or rectum (K62.6)
ulcerative colitis (K51.-)
- Chapter
- XI · Diseases of the digestive system
- Section
- K55-K64
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.