2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Diverticular disease of intestine
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
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K57: its own notes plus those printed at Chapter 11. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

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

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.

On K57 itself
  • diverticulum of appendix (K38.2)
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)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

  • if applicable:
  • pelvic abscess (K6A.0-)
  • peritonitis (K65.-)

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K57, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming K57: they are not reported together with it, unless the two conditions are unrelated.

  • K92.2 Gastrointestinal hemorrhage, unspecified
    diverticular disease with hemorrhage (K57.-)

Code Also 2

These codes say K57 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • K65 Peritonitis
    if applicable diverticular disease of intestine (K57.-)
  • K6A.0 Pelvic abscess
    diverticular disease of intestine (K57.-)

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About K57Overview

What is the ICD-10 code for diverticular disease of intestine?

K57 is the ICD-10-CM category for diverticular disease of intestine, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can K57 be reported with Q43.8?

Not as a rule. The Excludes1 note on K57 lists "congenital diverticulum of intestine (Q43.8)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).