K58Header code — not billable

Irritable bowel syndrome

Chapter
11. Diseases of the digestive system
Category
K58
Effective date
October 1, 2026

Related codes in category K58

K58.0Irritable bowel syndrome with diarrheaYesK58.1Irritable bowel syndrome with constipationYesK58.2Mixed irritable bowel syndromeYesK58.8Other irritable bowel syndromeYesK58.9Irritable bowel syndrome, unspecifiedYes

Frequently asked questions

What is ICD-10 code K58?

K58 is an ICD-10-CM diagnosis code for Irritable bowel syndrome.

Is K58 a billable code?

No. K58 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is K58 in?

K58 falls under Chapter 11: Diseases of the digestive system.

When did K58 become effective?

K58 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to K58?

K58 belongs to category K58, which includes 5 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.