What does ICD-10 code K57 mean?

ICD-10 code K57 is the standardized code used for diverticular disease of intestine in medical records and coding systems.

When is ICD-10 code K57 used?

Doctors, hospitals, and insurers may use ICD-10 code K57 when recording diverticular disease of intestine in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code K57 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code K57: Diverticular disease of intestine

Name: ICD-10 Code K57: Diverticular disease of intestine
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:15:46.426Z

K57 is an ICD-10 diagnosis entry used to group records related to Diverticular disease of intestine. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).

When is it used?

May be used when a clinician documents diverticular disease of intestine in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

11Diseases of the digestive system (K00-K95)

block

K55-K64Other diseases of intestines

currentK55-K64

Official coding notes

Excludes1 (do not code together)

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

Excludes2 (may code together if documented)

diverticulum of appendix (K38.2)

Code also

if applicable peritonitis K65.-

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

GastroenterologistGeneral Physician

Sibling codes

K55Vascular disorders of intestine K56Paralytic ileus and intestinal obstruction without hernia K58Irritable bowel syndrome K59Other functional intestinal disorders K60Fissure and fistula of anal and rectal regions K61Abscess of anal and rectal regions K62Other diseases of anus and rectum K63Other diseases of intestine K64Hemorrhoids and perianal venous thrombosis

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

K57

Common synonyms

Diverticular disease of intestine

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.