K57 › K57.0

K57.01 Diverticulitis of small intestine with perforation and abscess with bleeding

BillableNo payment HCCChapter 11

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Instructional notes

Chapter 11

Excludes2Not included here: the patient may have both; report both when both are present.

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

K57

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

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

Excludes2Not included here: the patient may have both; report both when both are present.

diverticulum of appendix (K38.2)

Code also

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

K57.0

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

diverticulitis of both small and large intestine with perforation and abscess (K57.4-)

Chapter 11: Diseases of the digestive system · K55-K64 Other diseases of intestines (K55-K64)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.