ICD-10 Diagnosis Code K91

Intraop and postproc comp and disorders of dgstv sys, NEC

Diagnosis Code K91

ICD-10: K91
Short Description: Intraop and postproc comp and disorders of dgstv sys, NEC
Long Description: Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
This is the 2018 version of the ICD-10-CM diagnosis code K91

Not Valid for Submission
The code K91 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the digestive system (K00–K93)
    • Other diseases of the digestive system (K90-K95)
      • Intraop and postproc comp and disorders of dgstv sys, NEC (K91)

Information for Medical Professionals

Index of Diseases and Injuries
References found for the code K91 in the Index of Diseases and Injuries:


Information for Patients


Digestive Diseases

Also called: Gastrointestinal 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

  • Digestive diseases (Medical Encyclopedia)
  • EGD discharge (Medical Encyclopedia)
  • Fecal fat (Medical Encyclopedia)
  • Gastrointestinal fistula (Medical Encyclopedia)
  • Gastrointestinal perforation (Medical Encyclopedia)
  • Lower GI Series - NIH (National Institute of Diabetes and Digestive and Kidney Diseases)
  • Stools - floating (Medical Encyclopedia)
  • Upper GI and small bowel series (Medical Encyclopedia)


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