K91
ICD-10Non-billable categoryIntraop and postproc comp and disorders of dgstv sys, NEC
Official ICD-10-CM descriptor (FY2026)
Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
K91 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- 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)
More specific codes under K91
- K91.0Vomiting following gastrointestinal surgery
- K91.1Postgastric surgery syndromes
- K91.2Postsurgical malabsorption, not elsewhere classified
- K91.3Postprocedural intestinal obstructioncategory
- K91.5Postcholecystectomy syndrome
- K91.6Intraop hemor/hemtom of a dgstv sys org comp a procedurecategory
- K91.7Accidental pnctr & lac of a digestive system org dur proccategory
- K91.8Oth intraop and postproc comp and disorders of dgstv syscategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.