ICD-10-CM › K00-K95 › K55-K64 › K codes › K59

K59

Other functional intestinal disorders

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 7 more specific codes instead:

  • K59.0 Constipation (also a header)
  • K59.1 Functional diarrhea
  • K59.2 Neurogenic bowel, not elsewhere classified
  • K59.3 Megacolon, not elsewhere classified (also a header)
  • K59.4 Anal spasm
  • K59.8 Other specified functional intestinal disorders (also a header)
  • K59.9 Functional intestinal disorder, unspecified

What has happened to this code

Every change the publisher made, from 2012 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. FY2012 Added to the draft code set draft Other functional intestinal disorders

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.

This code

Excludes1 - never coded here

  • change in bowel habit NOS (R19.4)
  • intestinal malabsorption (K90.-)
  • psychogenic intestinal disorders (F45.8)

Excludes2 - not included here

  • functional disorders of stomach (K31.-)