ICD-10 Code
International Classification of Diseases, 10th Revision
Aug 24, 2017

See: Ulcerative colitis

K51 is NOT a complete or valid ICD 10 diagnosis code.

You should code each health care encounter to the level of certainty known for that encounter. When sufficient clinical information is not known or available to assign a more specific code, it is acceptable to report the appropriate unspecified code.

See below for more specifc codes relating to
Ulcerative colitis

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Use Additional Code
  • code to identify manifestations, such as:
  • pyoderma gangrenosum (L88)
  • Crohn's disease [regional enteritis] (K50.-)

More specific codes for 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
See also ICD 10 code for
Back to K51
See the 2017 ICD-10-CM Coding Guidelines.

Questions related to K51 Ulcerative colitis

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.