K57.81 – Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding

ICD-10-CM 2027 diagnosis code · Other diseases of intestines

Billable code

ICD-10-CM code K57.81

Code: K57.81 (claims format: K5781)
Description: Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding
Short description: Dvtrcli of intest, part unsp, w perf and abscess w bleeding
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 11. Diseases of the digestive system (K00-K95)
Block: K55-K64 Other diseases of intestines
Parent codes: K57 › K57.8

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

K57 – Diverticular disease of intestine

Excludes1 (not coded here):

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

Excludes2 (not included here):

diverticulum of appendix (K38.2)

Code also:

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

Index terms for K57.81

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in K57.8

K57.80 – Diverticulitis of intestine, part unspecified, with perforation and abscess without bleedingBillable

Frequently asked questions

What is ICD-10 code K57.81?

K57.81 is the ICD-10-CM code for diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding, in the block K55-K64 (Other diseases of intestines).

Is K57.81 a billable code?

Yes. K57.81 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K57.81 belong to?

It belongs to category K57 – Diverticular disease of intestine.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.