2027 ICD-10-CM Diagnosis Code K58Irritable bowel syndrome

ICD-10-CM Codes›K00–K95›K55-K64›K58

ICD-10-CM K58
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K58 is a non-billable ICD-10-CM category code for irritable bowel syndrome, so it cannot be submitted on claims. Use a more specific code from this category instead, such as K58.0, K58.1, K58.2, and K58.8.

Code Identity

ICD-10-CM Code
K58
Billable Status
No — Non-Billable Category
Code Describes
Irritable bowel syndrome
Short Description
Irritable bowel syndrome
Same as the full description in the CMS dataset.
Chapter
K55-K64
Other diseases of intestines

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK58Irritable bowel syndrome
This CodeK58Irritable bowel syndrome

Specific Coding for Irritable bowel syndromeOverview

Non-specific codes like K58 require more characters. Use one of these billable codes instead:

  • Use K58.0 for Irritable bowel syndrome with diarrhea

  • Use K58.1 for Irritable bowel syndrome with constipation

  • Use K58.2 for Mixed irritable bowel syndrome

  • Use K58.8 for Other irritable bowel syndrome

  • Use K58.9 for Irritable bowel syndrome, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K58: its own notes plus those printed at Chapter 11. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • irritable colon
  • spastic colon

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 11 (K00-K95) Diseases of the digestive system applies to 863 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K58, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming K58: they are not reported together with it, unless the two conditions are unrelated.

Code First 1

These codes say to code first a condition named in the note, and K58 is one of the conditions named.

  • F54 Psychological and behavioral factors associated with disorders or diseases classified elsewhere
    mucous colitis (K58.-)

Clinical InformationClinical

  • Irritable Bowel Syndrome

    a disorder with chronic or recurrent colonic symptoms without a clearcut etiology. this condition is characterized by chronic or recurrent abdominal pain, bloating, mucus in feces, and an erratic disturbance of defecation.

Patient EducationClinical

Irritable Bowel Syndrome

Irritable bowel syndrome (IBS) is a problem that affects the large intestine. It can cause abdominal cramping, bloating, and a change in bowel habits. Some people with the disorder have constipation. Some have diarrhea. Others go back and forth between the two.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About K58Overview

What is the ICD-10 code for irritable bowel syndrome?

K58 is the ICD-10-CM category for irritable bowel syndrome, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is K58 (Irritable bowel syndrome) a billable code?

No. This is a category header that groups the codes for irritable bowel syndrome, and headers cannot be submitted on claims. Claims for irritable bowel syndrome need a more specific code from this category, such as K58.0, K58.1, and K58.2.