K57.81

Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from K57Diverticular disease of intestine
Excludes 1

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

Excludes 2

diverticulum of appendix (K38.2)

Code also

if applicable peritonitis K65.-

Inherited from chapter 11Diseases of the digestive system
Excludes 2

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)

Official Guidelines for K57.81

FY 2026 ›