Noninfective enteritis and colitis (K50-K52) ICD-10-CM
The K50–K52 section covers noninfective enteritis and colitis with 119 ICD-10-CM diagnosis codes, of which 91 are billable in fiscal year 2027. The section is organized into the 3 code ranges listed below.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- noninfective inflammatory bowel disease
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Code Ranges in This Section 3 ranges · 119 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| K50 | Crohn's disease [regional enteritis] (K50) | 37 | 28 |
| K51 | Ulcerative colitis (K51) | 64 | 49 |
| K52 | Other and unspecified noninfective gastroenteritis and colitis (K52) | 18 | 14 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the K50–K52 Code Range
These noninfective conditions include Crohn's disease, ulcerative colitis, and other forms of gastroenteritis and colitis. Ulcerative colitis is inflammation of the colon, mainly in its inner lining.
K50 separates Crohn's disease by whether it affects the small intestine, large intestine, both, or an unspecified site. K51 distinguishes named forms of ulcerative colitis and inflammatory polyps of the colon. K52 includes conditions linked to radiation, toxic causes, allergies, or diet, alongside indeterminate and unspecified colitis.
Questions About This Page
How many codes are in the K50-K52 range?
The K50-K52 range contains 119 ICD-10-CM diagnosis codes in FY 2027. 91 of them are billable, and the rest are category headers that organize the section.
What conditions does K50-K52 cover?
The range covers noninfective enteritis and colitis. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
