K57.20 is the authoritative medical code for Diverticulitis of large intestine with perforation and abscess without bleeding. This classification is used in medical billing and clinical recording to specify the clinical criteria for diverticulitis of large intestine with perforation and abscess without bleeding (ICD-10-CM K57.20), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Diverticulitis of large intestine with perforation and abscess without bleeding is a billable ICD-10-CM diagnosis code K57.20. Excludes1 (not coded here): diverticulitis of both small and large intestine with perforation and abscess K57.4-; congenital diverticulum of intestine Q43.8; Meckel's diverticulum Q43.0. Excludes2 (not included here): diverticulum of appendix K38.2. Code also: if applicable peritonitis K65.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for K57.20 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- diverticulitis of both small and large intestine with perforation and abscess K57.4-
- congenital diverticulum of intestine Q43.8
- Meckel's diverticulum Q43.0
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- diverticulum of appendix K38.2
Code Also
Additional codes that may be required to fully describe the encounter.
- if applicable:
- pelvic abscess K6A.0-
- peritonitis K65.-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with K57.20?
Per official ICD-10-CM Excludes1 instructions, K57.20 must not be reported together with: diverticulitis of both small and large intestine with perforation and abscess (K57.4-); congenital diverticulum of intestine (Q43.8); Meckel's diverticulum (Q43.0).
Can K57.20 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, K57.20 and the following are not considered part of each other and may both be reported when both conditions are present: diverticulum of appendix (K38.2).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to K57.20 in its code family, with their registry titles.
- K57 — Diverticular disease of intestine
- K57.0 — Diverticulitis of small intestine with perforation and abscess
- K57.01 — Diverticulitis of small intestine with perforation and abscess with bleeding
- K57.1 — Diverticular disease of small intestine without perforation or abscess
- 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
- K57.2 — Diverticulitis of large intestine with perforation and abscess
- K57.21 — Diverticulitis of large intestine with perforation and abscess with bleeding
View all 31 codes in the K57 family
Indexed Clinical Terms (5)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic), with, diverticular disease (intestine), large intestine
- Diverticulitis (acute), intestine, large, with, abscess, perforation
- Perforation, perforated (nontraumatic) (of), diverticulum (intestine), large intestine
- Peritonitis (adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion), with or following, diverticular disease (intestine), large intestine
- Rupture, ruptured, diverticulum (intestine), large intestine