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  6. 2024 ICD-10-CM Code K91
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code K91

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

ICD-10-CM Code:
K91
ICD-10 Code for:
Intraop and postproc comp and disorders of dgstv sys, NEC
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the digestive system
    (K00–K95)
    • Other diseases of the digestive system
      (K90-K95)
      • Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
        (K91)

K91 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Intraop and postproc comp and disorders of dgstv sys, NEC

Non-specific codes like K91 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for intraop and postproc comp and disorders of dgstv sys, nec:

  • Use K91.0 for Vomiting following gastrointestinal surgery - BILLABLE CODE

  • Use K91.1 for Postgastric surgery syndromes - BILLABLE CODE

  • Use K91.2 for Postsurgical malabsorption, not elsewhere classified - BILLABLE CODE

  • K91.3 for Postprocedural intestinal obstruction - NON-BILLABLE CODE

  • Use K91.30 for Postprocedural intestinal obstruction, unspecified as to partial versus complete - BILLABLE CODE

  • Use K91.31 for Postprocedural partial intestinal obstruction - BILLABLE CODE

  • Use K91.32 for Postprocedural complete intestinal obstruction - BILLABLE CODE

  • Use K91.5 for Postcholecystectomy syndrome - BILLABLE CODE

  • K91.6 for Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedure - NON-BILLABLE CODE

  • Use K91.61 for Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a digestive system procedure - BILLABLE CODE

  • Use K91.62 for Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating other procedure - BILLABLE CODE

  • K91.7 for Accidental puncture and laceration of a digestive system organ or structure during a procedure - NON-BILLABLE CODE

  • Use K91.71 for Accidental puncture and laceration of a digestive system organ or structure during a digestive system procedure - BILLABLE CODE

  • Use K91.72 for Accidental puncture and laceration of a digestive system organ or structure during other procedure - BILLABLE CODE

  • K91.8 for Other intraoperative and postprocedural complications and disorders of digestive system - NON-BILLABLE CODE

  • Use K91.81 for Other intraoperative complications of digestive system - BILLABLE CODE

  • Use K91.82 for Postprocedural hepatic failure - BILLABLE CODE

  • Use K91.83 for Postprocedural hepatorenal syndrome - BILLABLE CODE

  • K91.84 for Postprocedural hemorrhage of a digestive system organ or structure following a procedure - NON-BILLABLE CODE

  • K91.85 for Complications of intestinal pouch - NON-BILLABLE CODE

  • Use K91.86 for Retained cholelithiasis following cholecystectomy - BILLABLE CODE

  • K91.87 for Postprocedural hematoma and seroma of a digestive system organ or structure following a procedure - NON-BILLABLE CODE

  • Use K91.89 for Other postprocedural complications and disorders of digestive system - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • 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

Patient Education


Digestive Diseases

When you eat, your body breaks food down to a form it can use to build and nourish cells and provide energy. This process is called digestion.

Your digestive system is a series of hollow organs joined in a long, twisting tube. It runs from your mouth to your anus and includes your esophagus, stomach, and small and large intestines. Your liver, gallbladder and pancreas are also involved. They produce juices to help digestion.

There are many types of digestive disorders. The symptoms vary widely depending on the problem. In general, you should see your doctor if you have:

  • Blood in your stool
  • Changes in bowel habits
  • Severe abdominal pain
  • Unintentional weight loss
  • Heartburn not relieved by antacids

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.