ICD-10-CM 2027 diagnosis code
K91Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
K91 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.Short description: Intraop and postproc comp and disorders of dgstv sys, NEC
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About K91
K91 is the ICD-10-CM diagnosis code for intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified. It belongs to block K90-K95 (other diseases of the digestive system) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: K91.0 (surgery), K91.1 (syndromes), K91.2 (classified), K91.3 (obstruction), K91.5 (syndrome), K91.6 (procedure), K91.7 (procedure) and K91.8 (system).
The conditions in its Excludes2 note aren't part of K91, but may be coded alongside it if the patient has both: complications of artificial opening of digestive system (K94.-), complications of bariatric procedures (K95.-), gastrojejunal ulcer (K28.-), postprocedural (radiation) retroperitoneal abscess (K68.11) and 3 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under K91
- K91.0Vomiting following gastrointestinal surgeryBillable
- K91.1Postgastric surgery syndromesBillable
- K91.2Postsurgical malabsorption, not elsewhere classifiedBillable
- K91.3Postprocedural intestinal obstruction
- K91.5Postcholecystectomy syndromeBillable
- K91.6Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedure
- K91.7Accidental puncture and laceration of a digestive system organ or structure during a procedure
- K91.8Other intraoperative and postprocedural complications and disorders of digestive system
- K91.81Other intraoperative complications of digestive systemBillable
- K91.82Postprocedural hepatic failureBillable
- K91.83Postprocedural hepatorenal syndromeBillable
- K91.84Postprocedural hemorrhage of a digestive system organ or structure following a procedure
- K91.85Complications of intestinal pouch
- K91.86Retained cholelithiasis following cholecystectomyBillable
- K91.87Postprocedural hematoma and seroma of a digestive system organ or structure following a procedure
- K91.870Postprocedural hematoma of a digestive system organ or structure following a digestive system procedureBillable
- K91.871Postprocedural hematoma of a digestive system organ or structure following other procedureBillable
- K91.872Postprocedural seroma of a digestive system organ or structure following a digestive system procedureBillable
- K91.873Postprocedural seroma of a digestive system organ or structure following other procedureBillable
- K91.89Other postprocedural complications and disorders of digestive systemBillable
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to K91.
Broader instructions also apply from Chapter 11: Diseases of the digestive system.
Codes whose notes reference K91
- T81Excludes2
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about K91
Is K91 billable?
- No. K91 is a header code. Report one of its more specific subcodes instead.