ICD-10 Code for Diverticulitis
Also indexed as (acute)
The ICD-10-CM code for diverticulitis is K57.92 — Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding. This is the code the Alphabetic Index gives for diverticulitis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
K57.92 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which diverticulitis code should you use?
The Alphabetic Index lists 17 codes under Diverticulitis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| intestine | K57.92 | Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding |
Diverticulitis intestine
| congenital | Q43.8 | Other specified congenital malformations of intestine | |
| large | K57.32 | Diverticulitis of large intestine without perforation or abscess without bleeding | |
| small | K57.12 | Diverticulitis of small intestine without perforation or abscess without bleeding | |
| with › abscess, perforation | K57.80 | Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding | |
| with › bleeding | K57.93 | Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding | |
| with › abscess, perforation › with bleeding | K57.81 | Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding | |
| large › with › abscess, perforation | K57.20 | Diverticulitis of large intestine with perforation and abscess without bleeding | |
| large › with › bleeding | K57.33 | Diverticulitis of large intestine without perforation or abscess with bleeding | |
| large › with › small intestine | K57.52 | Diverticulitis of both small and large intestine without perforation or abscess without bleeding | |
| small › with › abscess, perforation | K57.00 | Diverticulitis of small intestine with perforation and abscess without bleeding | |
| small › with › bleeding | K57.13 | Diverticulitis of small intestine without perforation or abscess with bleeding | |
| small › with › large intestine | K57.52 | Diverticulitis of both small and large intestine without perforation or abscess without bleeding | |
| large › with › abscess, perforation › with bleeding | K57.21 | Diverticulitis of large intestine with perforation and abscess with bleeding | |
| small › with › abscess, perforation › with bleeding | K57.01 | Diverticulitis of small intestine with perforation and abscess with bleeding | |
| large › with › small intestine › with › abscess, perforation | K57.40 | Diverticulitis of both small and large intestine with perforation and abscess without bleeding | |
| large › with › small intestine › with › bleeding | K57.53 | Diverticulitis of both small and large intestine without perforation or abscess with bleeding | |
| small › with › large intestine › with › abscess, perforation | K57.40 | Diverticulitis of both small and large intestine with perforation and abscess without bleeding | |
| small › with › large intestine › with › bleeding | K57.53 | Diverticulitis of both small and large intestine without perforation or abscess with bleeding | |
| large › with › small intestine › with › abscess, perforation › with bleeding | K57.41 | Diverticulitis of both small and large intestine with perforation and abscess with bleeding | |
| small › with › large intestine › with › abscess, perforation › with bleeding | K57.41 | Diverticulitis of both small and large intestine with perforation and abscess with bleeding |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources