ICD-10-CM › K00-K95 › K50-K52 › K51.31 Ulcerative (chronic)... › K51.313

K51.313

Ulcerative (chronic) rectosigmoiditis with fistula

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Ulcerative (chronic) rectosigmoiditis with fistula

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from K51 Ulcerative colitis

Excludes1 - never coded here

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

Use additional code

  • code to identify any associated fistulas, if applicable:
  • code to identify manifestations, such as:
  • anal fistula (K60.3-)
  • pyoderma gangrenosum (L88)
  • anorectal fistula (K60.5-)
  • rectal fistula (K60.4-)

Inherited from the K50-K52 section Noninfective enteritis and colitis (K50-K52)

Excludes1 - never coded here

  • irritable bowel syndrome (K58.-)
  • megacolon (K59.3-)

Includes

  • noninfective inflammatory bowel disease

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
K51.311 Ulcerative (chronic) rectosigmoiditis with rectal bleeding Valid
K51.312 Ulcerative (chronic) rectosigmoiditis with intestinal obstruction Valid
K51.314 Ulcerative (chronic) rectosigmoiditis with abscess Valid
K51.318 Ulcerative (chronic) rectosigmoiditis with other complication Valid
K51.319 Ulcerative (chronic) rectosigmoiditis with unspecified complications Valid