ICD-10-CM 2027
ICD-10 code for Diverticulitis
Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding
Confirmed by the official ICD-10-CM index entry “diverticulitis (acute)”. Page updated September 29, 2026.
About coding Diverticulitis
The ICD-10-CM code for Diverticulitis is K57.92 (Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding). The official index lists 23 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.
Related Diverticulitis codes
- K57.00 Diverticulitis of small intestine with perforation and abscess without bleeding
- K57.01 Diverticulitis of small intestine with perforation and abscess with bleeding
- K57.10 Diverticulosis of small intestine without perforation or abscess without bleeding
- K57.11 Diverticulosis of small intestine without perforation or abscess with bleeding
- K57.12 Diverticulitis of small intestine without perforation or abscess without bleeding
- K57.13 Diverticulitis of small intestine without perforation or abscess with bleeding
- K57.20 Diverticulitis of large intestine with perforation and abscess without bleeding
- K57.21 Diverticulitis of large intestine with perforation and abscess with bleeding
- K57.30 Diverticulosis of large intestine without perforation or abscess without bleeding
- K57.31 Diverticulosis of large intestine without perforation or abscess with bleeding
- K57.32 Diverticulitis of large intestine without perforation or abscess without bleeding
- K57.33 Diverticulitis of large intestine without perforation or abscess with bleeding
- K57.40 Diverticulitis of both small and large intestine with perforation and abscess without bleeding
- K57.41 Diverticulitis of both small and large intestine with perforation and abscess with bleeding
- K57.50 Diverticulosis of both small and large intestine without perforation or abscess without bleeding
- K57.51 Diverticulosis of both small and large intestine without perforation or abscess with bleeding
- K57.52 Diverticulitis of both small and large intestine without perforation or abscess without bleeding
- K57.53 Diverticulitis of both small and large intestine without perforation or abscess with bleeding
- K57.80 Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding
- K57.81 Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding
- K57.90 Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding
- K57.91 Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding
- K57.93 Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding
Common questions about Diverticulitis ICD-10 codes
What is the ICD-10 code for Diverticulitis?
- K57.92 — Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding. More specific codes apply when the documentation supports them: K57.00, K57.01, K57.10, K57.11 and others below.
What is the ICD-10 code for diverticulitis of small intestine with perforation and abscess without bleeding?
- K57.00 — Diverticulitis of small intestine with perforation and abscess without bleeding.
What is the ICD-10 code for diverticulitis of small intestine with perforation and abscess with bleeding?
- K57.01 — Diverticulitis of small intestine with perforation and abscess with bleeding.
What is the ICD-10 code for diverticulosis of small intestine without perforation or abscess without bleeding?
- K57.10 — Diverticulosis of small intestine without perforation or abscess without bleeding.
What is the ICD-10 code for diverticulosis of small intestine without perforation or abscess with bleeding?
- K57.11 — Diverticulosis of small intestine without perforation or abscess with bleeding.
What is the ICD-10 code for diverticulitis of small intestine without perforation or abscess without bleeding?
- K57.12 — Diverticulitis of small intestine without perforation or abscess without bleeding.
What is the ICD-10 code for diverticulitis of small intestine without perforation or abscess with bleeding?
- K57.13 — Diverticulitis of small intestine without perforation or abscess with 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.