ICD-10-CM diagnosis code
K51.518 Left sided colitis with other complication
- Billable
- Yes, a complete code (FY2026)
- Category
- K51 Ulcerative colitis
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Other codes in K51
49 complete codes in this category.
- K51.419Inflammatory polyps of colon with unspecified complications
- K51.50Left sided colitis without complications
- K51.511Left sided colitis with rectal bleeding
- K51.512Left sided colitis with intestinal obstruction
- K51.513Left sided colitis with fistula
- K51.514Left sided colitis with abscess
- K51.518Left sided colitis with other complication
- K51.519Left sided colitis with unspecified complications
- K51.80Other ulcerative colitis without complications
- K51.811Other ulcerative colitis with rectal bleeding
- K51.812Other ulcerative colitis with intestinal obstruction
- K51.813Other ulcerative colitis with fistula
Documentation tips
- Make sure the note supports every element of the title, “Left sided colitis with other complication”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to K51.
The international WHO ICD-10 also has K51, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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