K91.858 – Other complications of intestinal pouch

ICD-10-CM 2027 diagnosis code · Other diseases of the digestive system

Billable code

ICD-10-CM code K91.858

Code: K91.858 (claims format: K91858)
Description: Other complications of intestinal pouch
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: K90-K95 Other diseases of the digestive system
Parent codes: K91 › K91.8 › K91.85

Notes inherited from parent codes

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

K91 – Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified

Excludes2 (not included here):

complications of artificial opening of digestive system (K94.-)
complications of bariatric procedures (K95.-)
gastrojejunal ulcer (K28.-)
postprocedural (radiation) retroperitoneal abscess (K68.11)
radiation colitis (K52.0)
radiation gastroenteritis (K52.0)
radiation proctitis (K62.7)

Index terms for K91.858

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

Complication, intestinal pouch NEC

Related codes in K91.85

K91.850 – PouchitisBillable

Frequently asked questions

What is ICD-10 code K91.858?

K91.858 is the ICD-10-CM code for other complications of intestinal pouch, in the block K90-K95 (Other diseases of the digestive system).

Is K91.858 a billable code?

Yes. K91.858 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K91.858 belong to?

It belongs to category K91 – Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified.

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.