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  3. Ch. K00-K95
  4. Sec. K55-K64
  5. Category K63
Category K63

Other diseases of intestine

Clinical Classification Guidelines

Specific Diagnosis Codes

Abscess of intestine
K63.0
Perforation of intestine (nontraumatic)
K63.1
Fistula of intestine
K63.2
Ulcer of intestine
K63.3
Enteroptosis
K63.4
Polyp of colon
K63.5
Other specified diseases of intestine
K63.8
Dieulafoy lesion of intestine
K63.81
Intestinal microbial overgrowth
K63.82
Small intestinal bacterial overgrowth
K63.821
Small intestinal bacterial overgrowth, hydrogen-subtype
K63.8211
Small intestinal bacterial overgrowth, hydrogen sulfide-subtype
K63.8212
Small intestinal bacterial overgrowth, unspecified
K63.8219
Small intestinal fungal overgrowth
K63.822
Intestinal methanogen overgrowth, unspecified
K63.829
Other specified diseases of intestine
K63.89
Disease of intestine, unspecified
K63.9
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Data updated for October 2025 release.

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