2021 ICD-10-CM Codes for Ulcerative colitis (K51)

Instructional Notations

Use Additional Code Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

  • code to identify manifestations, such as:
  • pyoderma gangrenosum L88

Type 1 Excludes 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.

  • Crohn's disease [regional enteritis] K50
    • ICD-10 Index

      • Diseases of the digestive system (K00–K93)

        • Noninfective enteritis and colitis (K50-K52)

            • Ulcerative colitis (K51)
            • K51 - Ulcerative colitis NON-BILLABLE CODE
            • K51.0 - Ulcerative (chronic) pancolitis NON-BILLABLE CODE
            • K51.00 - Ulcerative (chronic) pancolitis without complications BILLABLE CODE
            • K51.01 - Ulcerative (chronic) pancolitis with complications NON-BILLABLE CODE
            • K51.011 - Ulcerative (chronic) pancolitis with rectal bleeding BILLABLE CODE
            • K51.012 - Ulcerative (chronic) pancolitis with intestinal obstruction BILLABLE CODE
            • K51.013 - Ulcerative (chronic) pancolitis with fistula BILLABLE CODE
            • K51.014 - Ulcerative (chronic) pancolitis with abscess BILLABLE CODE
            • K51.018 - Ulcerative (chronic) pancolitis with other complication BILLABLE CODE
            • K51.019 - Ulcerative (chronic) pancolitis with unsp complications BILLABLE CODE
            • K51.2 - Ulcerative (chronic) proctitis NON-BILLABLE CODE
            • K51.20 - Ulcerative (chronic) proctitis without complications BILLABLE CODE
            • K51.21 - Ulcerative (chronic) proctitis with complications NON-BILLABLE CODE
            • K51.211 - Ulcerative (chronic) proctitis with rectal bleeding BILLABLE CODE
            • K51.212 - Ulcerative (chronic) proctitis with intestinal obstruction BILLABLE CODE
            • K51.213 - Ulcerative (chronic) proctitis with fistula BILLABLE CODE
            • K51.214 - Ulcerative (chronic) proctitis with abscess BILLABLE CODE
            • K51.218 - Ulcerative (chronic) proctitis with other complication BILLABLE CODE
            • K51.219 - Ulcerative (chronic) proctitis with unsp complications BILLABLE CODE
            • K51.3 - Ulcerative (chronic) rectosigmoiditis NON-BILLABLE CODE
            • K51.30 - Ulcerative (chronic) rectosigmoiditis without complications BILLABLE CODE
            • K51.31 - Ulcerative (chronic) rectosigmoiditis with complications NON-BILLABLE CODE
            • K51.311 - Ulcerative (chronic) rectosigmoiditis with rectal bleeding BILLABLE CODE
            • K51.312 - Ulcerative (chronic) rectosigmoiditis w intestinal obst BILLABLE CODE
            • K51.313 - Ulcerative (chronic) rectosigmoiditis with fistula BILLABLE CODE
            • K51.314 - Ulcerative (chronic) rectosigmoiditis with abscess BILLABLE CODE
            • K51.318 - Ulcerative (chronic) rectosigmoiditis with oth complication BILLABLE CODE
            • K51.319 - Ulcerative (chronic) rectosigmoiditis w unsp complications BILLABLE CODE
            • K51.4 - Inflammatory polyps of colon NON-BILLABLE CODE
            • K51.40 - Inflammatory polyps of colon without complications BILLABLE CODE
            • K51.41 - Inflammatory polyps of colon with complications NON-BILLABLE CODE
            • K51.411 - Inflammatory polyps of colon with rectal bleeding BILLABLE CODE
            • K51.412 - Inflammatory polyps of colon with intestinal obstruction BILLABLE CODE
            • K51.413 - Inflammatory polyps of colon with fistula BILLABLE CODE
            • K51.414 - Inflammatory polyps of colon with abscess BILLABLE CODE
            • K51.418 - Inflammatory polyps of colon with other complication BILLABLE CODE
            • K51.419 - Inflammatory polyps of colon with unspecified complications BILLABLE CODE
            • K51.5 - Left sided colitis NON-BILLABLE CODE
            • K51.50 - Left sided colitis without complications BILLABLE CODE
            • K51.51 - Left sided colitis with complications NON-BILLABLE CODE
            • K51.511 - Left sided colitis with rectal bleeding BILLABLE CODE
            • K51.512 - Left sided colitis with intestinal obstruction BILLABLE CODE
            • K51.513 - Left sided colitis with fistula BILLABLE CODE
            • K51.514 - Left sided colitis with abscess BILLABLE CODE
            • K51.518 - Left sided colitis with other complication BILLABLE CODE
            • K51.519 - Left sided colitis with unspecified complications BILLABLE CODE
            • K51.8 - Other ulcerative colitis NON-BILLABLE CODE
            • K51.80 - Other ulcerative colitis without complications BILLABLE CODE
            • K51.81 - Other ulcerative colitis with complications NON-BILLABLE CODE
            • K51.811 - Other ulcerative colitis with rectal bleeding BILLABLE CODE
            • K51.812 - Other ulcerative colitis with intestinal obstruction BILLABLE CODE
            • K51.813 - Other ulcerative colitis with fistula BILLABLE CODE
            • K51.814 - Other ulcerative colitis with abscess BILLABLE CODE
            • K51.818 - Other ulcerative colitis with other complication BILLABLE CODE
            • K51.819 - Other ulcerative colitis with unspecified complications BILLABLE CODE
            • K51.9 - Ulcerative colitis, unspecified NON-BILLABLE CODE
            • K51.90 - Ulcerative colitis, unspecified, without complications BILLABLE CODE
            • K51.91 - Ulcerative colitis, unspecified, with complications NON-BILLABLE CODE
            • K51.911 - Ulcerative colitis, unspecified with rectal bleeding BILLABLE CODE
            • K51.912 - Ulcerative colitis, unspecified with intestinal obstruction BILLABLE CODE
            • K51.913 - Ulcerative colitis, unspecified with fistula BILLABLE CODE
            • K51.914 - Ulcerative colitis, unspecified with abscess BILLABLE CODE
            • K51.918 - Ulcerative colitis, unspecified with other complication BILLABLE CODE
            • K51.919 - Ulcerative colitis, unsp with unspecified complications BILLABLE CODE