K51

Ulcerative colitis

Non-billable header

K51 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes

  • noninfective inflammatory bowel disease

Excludes1

Not coded here — never report together with this code.

  • irritable bowel syndrome (K58.-)
  • megacolon (K59.3-)
  • Crohn's disease [regional enteritis] (K50.-)

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use additional code

Add a code to identify the following, if applicable.

  • 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)

More specific codes K51

  • K51.0Ulcerative (chronic) pancolitisHeader
  • K51.2Ulcerative (chronic) proctitisHeader
  • K51.3Ulcerative (chronic) rectosigmoiditisHeader
  • K51.4Inflammatory polyps of colonHeader
  • K51.5Left sided colitisHeader
  • K51.8Other ulcerative colitisHeader
  • K51.9Ulcerative colitis, unspecifiedHeader

Related codes

  • K50Crohn's disease [regional enteritis]Header
  • K52Other and unspecified noninfective gastroenteritis and colitisHeader

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