---
title: "ICD-10-CM K57.91: Diverticulosis of intestine, part… | BillingBrief"
description: "ICD-10-CM code K57.91: Diverticulosis of intestine, part unspecified, without perforation or abscess with. Category, related codes, and the official source…"
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---

# K57.91 Diverticulosis of intestine, part unspecified, without perforation or abscess with…

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

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

### Excludes2

Not part of this code, but both can be coded when both are documented.

-   diverticulum of appendix (K38.2)

### Code also

A second code may be needed. Sequencing depends on the encounter.

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

## Related codes

-   [`K57.51` Diverticulosis of both small and large intestine without perforation or abscess with… ICD-10-CM](https://billingbrief.com/icd10/k57.51/)
-   [`K57.52` Diverticulitis of both small and large intestine without perforation or abscess without… ICD-10-CM](https://billingbrief.com/icd10/k57.52/)
-   [`K57.53` Diverticulitis of both small and large intestine without perforation or abscess with… ICD-10-CM](https://billingbrief.com/icd10/k57.53/)
-   [`K57.80` Diverticulitis of intestine, part unspecified, with perforation and abscess without… ICD-10-CM](https://billingbrief.com/icd10/k57.80/)
-   [`K57.81` Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding ICD-10-CM](https://billingbrief.com/icd10/k57.81/)
-   [`K57.90` Diverticulosis of intestine, part unspecified, without perforation or abscess without… ICD-10-CM](https://billingbrief.com/icd10/k57.90/)
-   [`K57.92` Diverticulitis of intestine, part unspecified, without perforation or abscess without… ICD-10-CM](https://billingbrief.com/icd10/k57.92/)
-   [`K57.93` Diverticulitis of intestine, part unspecified, without perforation or abscess with… ICD-10-CM](https://billingbrief.com/icd10/k57.93/)

## Common questions

### Is K57.91 a billable code?

Yes. K57.91 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

K57 Diverticular disease of intestine

Chapter

Diseases of the digestive system

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).