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ICD-10-CM Codes K00-K95 K50-K52 K51

ICD-10-CM Diagnosis Code K51

Ulcerative colitis

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Use Additional for K51:

  • code to identify any associated fistulas, if applicable:

  • anal fistula (K60.3-)

  • anorectal fistula (K60.5-)

  • rectal fistula (K60.4-)

  • code to identify manifestations, such as:

  • pyoderma gangrenosum (L88)

Excludes-1 for K51:

  • Crohn's disease [regional enteritis] (K50.-)

Codes Hierarchy:

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