DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K58 Irritable bowel syndrome

  • Header · not billable

K58 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

Index → code

  • Irritable, irritabilitycolon → K58.9
  • Hypermobility, hypermotilityileum → K58.9
  • Spasm(s), spastic, spasticitycolon → K58.9

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K55-K64 Other diseases of intestines (K55-K64)
  3. K58 Irritable bowel syndrome
Billable codes
5
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
23

Codes in K58

  1. K58.0
    Irritable bowel syndrome with diarrhea
    Billable
  2. K58.1
    Irritable bowel syndrome with constipation
    Billable
  3. K58.2
    Mixed irritable bowel syndrome
    Billable
  4. K58.8
    Other irritable bowel syndrome
    Billable
  5. K58.9
    Irritable bowel syndrome, unspecified
    Billable
    Inclusion terms 1

    Inclusion terms

    • Irritable bowel syndrome NOS

Sources of each column.

Instructions

At K58

Includes

  • irritable colon
  • spastic colon

Notes that also apply

Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.

Index entries

  • Colic (bilious) (infantile) (intestinal) (recurrent) (spasmodic)mucous → K58.9
  • Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic)spastic → K58.9
  • Hypermobility, hypermotilityileum → K58.9
  • Hypermobility, hypermotilityintestine → K58.9
  • Irritable, irritabilitybowel (syndrome) → K58.9
  • Irritable, irritabilitywithout diarrhea → K58.9
  • Irritable, irritabilitycolon → K58.9
  • Spasm(s), spastic, spasticitycolon → K58.9
  • Spasm(s), spastic, spasticityintestinal → K58.9
  • Spasm(s), spastic, spasticitysigmoid → K58.9
  • Colic (bilious) (infantile) (intestinal) (recurrent) (spasmodic)mucouswith diarrhea → K58.0
  • Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic)spasticwith diarrhea → K58.0
  • Irritable, irritabilitycolonwith diarrhea → K58.0
  • Spasm(s), spastic, spasticitycolonwith diarrhea → K58.0
  • Irritable, irritabilitybowel (syndrome)mixed → K58.2
  • Irritable, irritabilitybowel (syndrome)specified NEC → K58.8
  • Syndromeirritablebowel → K58.9
  • Irritable, irritabilitybowel (syndrome)withdiarrhea → K58.0
  • Irritable, irritabilitybowel (syndrome)withconstipation → K58.1
  • Syndromeirritablebowelmixed → K58.2
  • Syndromeirritablebowelspecified NEC → K58.8
  • Syndromeirritablebowelwithdiarrhea → K58.0
  • Syndromeirritablebowelwithconstipation → K58.1

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy