ICD-10-CM 2027
ICD-10 code for intestine diverticulitis
Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding
From the official ICD-10-CM alphabetic index entry “Diverticulitis (acute) › intestine”. Page updated September 29, 2026.
About coding intestine diverticulitis
The ICD-10-CM code for intestine diverticulitis is K57.92 (Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding). The official index lists 20 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K57.92.
Within K57.9, choose K57.92 (Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding) only when documentation doesn't support a more specific option: Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding (K57.90), Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding (K57.91) and Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding (K57.93).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific intestine diverticulitis codes (official index)
- with
- abscess, perforation K57.80 — Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding
- with bleeding K57.81 — Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding
- bleeding K57.93 — Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding
- congenital Q43.8 — Other specified congenital malformations of intestine
- large K57.32 — Diverticulitis of large intestine without perforation or abscess without bleeding
- with
- abscess, perforation K57.20 — Diverticulitis of large intestine with perforation and abscess without bleeding
- with bleeding K57.21 — Diverticulitis of large intestine with perforation and abscess with bleeding
- bleeding K57.33 — Diverticulitis of large intestine without perforation or abscess with bleeding
- small intestine K57.52 — Diverticulitis of both small and large intestine without perforation or abscess without bleeding
- with
- abscess, perforation K57.40 — Diverticulitis of both small and large intestine with perforation and abscess without bleeding
- with bleeding K57.41 — Diverticulitis of both small and large intestine with perforation and abscess with bleeding
- bleeding K57.53 — Diverticulitis of both small and large intestine without perforation or abscess with bleeding
- small K57.12 — Diverticulitis of small intestine without perforation or abscess without bleeding
- with
- abscess, perforation K57.00 — Diverticulitis of small intestine with perforation and abscess without bleeding
- with bleeding K57.01 — Diverticulitis of small intestine with perforation and abscess with bleeding
- bleeding K57.13 — Diverticulitis of small intestine without perforation or abscess with bleeding
- large intestine K57.52 — Diverticulitis of both small and large intestine without perforation or abscess without bleeding
- with
- abscess, perforation K57.40 — Diverticulitis of both small and large intestine with perforation and abscess without bleeding
- with bleeding K57.41 — Diverticulitis of both small and large intestine with perforation and abscess with bleeding
- bleeding K57.53 — Diverticulitis of both small and large intestine without perforation or abscess with bleeding
Common questions about intestine diverticulitis ICD-10 codes
What is the ICD-10 code for intestine diverticulitis?
- K57.92 — Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding. More specific codes apply when the documentation supports them: K57.80, K57.81, K57.93, Q43.8 and others below.
What is the ICD-10 code for congenital intestine diverticulitis?
- Q43.8 — Other specified congenital malformations of intestine.
What is the ICD-10 code for large intestine diverticulitis?
- K57.32 — Diverticulitis of large intestine without perforation or abscess without bleeding.
What is the ICD-10 code for small intestine diverticulitis?
- K57.12 — Diverticulitis of small intestine without perforation or abscess without bleeding.
Is K57.92 billable?
- Yes. K57.92 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K57.92 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K57.92 as a principal diagnosis.
Is K57.92 a CC or MCC?
- K57.92 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.