Other diseases of intestine (K63) ICD-10-CM
The K63 code range covers other diseases of intestine with 18 ICD-10-CM diagnosis codes. 14 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the K63 Range 18 codes · 14 billable
- K63 Other diseases of intestineNon-billable
- K63.0 Abscess of intestine
- K63.1 Perforation of intestine (nontraumatic)
- K63.2 Fistula of intestine
- K63.3 Ulcer of intestine
- K63.4 Enteroptosis
- K63.5 Polyp of colon
- K63.8 Other specified diseases of intestineNon-billable
- K63.81 Dieulafoy lesion of intestine
- K63.82 Intestinal microbial overgrowthNon-billable
- K63.821 Small intestinal bacterial overgrowthNon-billable
- K63.8211 Small intestinal bacterial overgrowth, hydrogen-subtype
- K63.8212 Small intestinal bacterial overgrowth, hydrogen sulfide-subtype
- K63.8219 Small intestinal bacterial overgrowth, unspecified
- K63.822 Small intestinal fungal overgrowth
- K63.829 Intestinal methanogen overgrowth, unspecified
- K63.89 Other specified diseases of intestine
- K63.9 Disease of intestine, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the K63 range.
Colon Polyp
A polypoid lesion that arises from the colon and protrudes into the lumen. This group includes adenomatous polyps, serrated polyps, and hamartomatous polyps.
Intestinal Fistula
An abnormal communication between the small or large intestine and another organ or cavity.
Intestinal Perforation
A rupture in the wall of the small or large intestine due to traumatic or pathologic processes.
Visceral Prolapse
The prolapse or downward displacement of the VISCERA.
About the K63 Code Range
These conditions affect the intestine and include sores called ulcers, colon polyps, and microbial overgrowth.
The subdivisions separate conditions such as an abscess, a perforation not caused by injury, a fistula, an ulcer, and a colon polyp. K63.8 groups other specified intestinal diseases, while K63.9 identifies unspecified intestinal disease.
Within K63.8, K63.82 groups intestinal microbial overgrowth. Its subdivisions distinguish bacterial and fungal overgrowth of the small intestine from intestinal methanogen overgrowth. The bacterial codes separate hydrogen, hydrogen sulfide, and unspecified subtypes.
Questions About This Page
How many billable codes are in the K63 range?
Of the 18 codes in this range, 14 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the K63 range classify?
The range classifies other diseases of intestine. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
