2026 ICD-10-CM Diagnosis Code K57Diverticular disease of intestine

ICD-10-CM Codes›K00–K95›K55-K64›K57

ICD-10-CM K57
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K57 is a non-billable ICD-10-CM category code for diverticular disease of intestine, so it cannot be submitted on claims. Use a more specific code from this category instead, such as K57.00, K57.01, K57.10, and K57.11.

Code Identity

ICD-10-CM Code
K57
Billable Status
No — Non-Billable Category
Code Describes
Diverticular disease of intestine
Chapter
K55-K64
Other diseases of intestines

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK57Diverticular disease of intestine
This CodeK57Diverticular disease of intestine

Specific Coding for Diverticular disease of intestineOverview

Non-specific codes like K57 require more characters. Use one of these billable codes instead:

  • K57.0 for Diverticulitis of small intestine with perforation and abscess

  • Use K57.00 for Diverticulitis of small intestine with perforation and abscess without bleeding

  • Use K57.01 for Diverticulitis of small intestine with perforation and abscess with bleeding

  • K57.1 for Diverticular disease of small intestine without perforation or abscess

  • Use K57.10 for Diverticulosis of small intestine without perforation or abscess without bleeding

  • Use K57.11 for Diverticulosis of small intestine without perforation or abscess with bleeding

  • Use K57.12 for Diverticulitis of small intestine without perforation or abscess without bleeding

  • Use K57.13 for Diverticulitis of small intestine without perforation or abscess with bleeding

  • K57.2 for Diverticulitis of large intestine with perforation and abscess

  • Use K57.20 for Diverticulitis of large intestine with perforation and abscess without bleeding

  • Use K57.21 for Diverticulitis of large intestine with perforation and abscess with bleeding

  • K57.3 for Diverticular disease of large intestine without perforation or abscess

  • Use K57.30 for Diverticulosis of large intestine without perforation or abscess without bleeding

  • Use K57.31 for Diverticulosis of large intestine without perforation or abscess with bleeding

  • Use K57.32 for Diverticulitis of large intestine without perforation or abscess without bleeding

  • Use K57.33 for Diverticulitis of large intestine without perforation or abscess with bleeding

  • K57.4 for Diverticulitis of both small and large intestine with perforation and abscess

  • Use K57.40 for Diverticulitis of both small and large intestine with perforation and abscess without bleeding

  • Use K57.41 for Diverticulitis of both small and large intestine with perforation and abscess with bleeding

  • K57.5 for Diverticular disease of both small and large intestine without perforation or abscess

  • Use K57.50 for Diverticulosis of both small and large intestine without perforation or abscess without bleeding

  • Use K57.51 for Diverticulosis of both small and large intestine without perforation or abscess with bleeding

  • Use K57.52 for Diverticulitis of both small and large intestine without perforation or abscess without bleeding

  • Use K57.53 for Diverticulitis of both small and large intestine without perforation or abscess with bleeding

  • K57.8 for Diverticulitis of intestine, part unspecified, with perforation and abscess

  • Use K57.80 for Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding

  • Use K57.81 for Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding

  • K57.9 for Diverticular disease of intestine, part unspecified, without perforation or abscess

  • Use K57.90 for Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding

  • Use K57.91 for Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding

  • Use K57.92 for Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding

  • Use K57.93 for Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code Also

  • if applicable peritonitis K65

Type 1 Excludes

  • congenital diverticulum of intestine Q43.8
  • Meckel's diverticulum Q43.0

Type 2 Excludes

  • diverticulum of appendix K38.2

Patient EducationClinical

Diverticulosis and Diverticulitis

Diverticula are small pouches, or sacs, that bulge outward through weak spots in your colon. They mostly form in the lower part of the colon. Diverticulosis is a condition in which you have these pouches. Most people who have diverticulosis do not have symptoms or problems. But sometimes the pouches can cause symptoms or become inflamed.

The full article covers:

  • What is diverticulosis?
  • What is diverticulitis?
  • What is diverticular disease?
  • What causes diverticulosis and diverticulitis?
  • Who is more likely to develop diverticulosis and diverticulitis?
  • What are the symptoms of diverticulosis and diverticulitis?
  • What other problems can diverticulosis and diverticulitis cause?
  • How are diverticulosis and diverticulitis diagnosed?

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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K57Overview

Is K57 (Diverticular disease of intestine) a billable code?

No. This is a category header that groups the codes for diverticular disease of intestine, and headers cannot be submitted on claims. Claims for diverticular disease of intestine need a more specific code from this category, such as K57.00, K57.01, and K57.10.