ICD-10-CM Code K85.90

Acute pancreatitis without necrosis or infection, unspecified

Version 2020 Billable Code

Valid for Submission

K85.90 is a billable code used to specify a medical diagnosis of acute pancreatitis without necrosis or infection, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code K85.90 might also be used to specify conditions or terms like acute hemorrhagic pancreatitis, acute pancreatitis, acute recurrent pancreatitis, anemia of endocrine disorder, aplastic anemia associated with pancreatitis, apoplectic pancreatitis, etc

Short Description:Acute pancreatitis without necrosis or infection, unsp
Long Description:Acute pancreatitis without necrosis or infection, unspecified

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code K85.90 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acute hemorrhagic pancreatitis
  • Acute pancreatitis
  • Acute recurrent pancreatitis
  • Anemia of endocrine disorder
  • Aplastic anemia associated with pancreatitis
  • Apoplectic pancreatitis
  • Follicular cholangitis and pancreatitis
  • Hemorrhage of pancreas
  • Painless pancreatitis
  • Pancreatic collection
  • Pancreatitis
  • Pancreatitis due to pancreatic duct obstruction
  • Pancytopenia with pancreatitis
  • Phlegmon of pancreas
  • Pleural effusion associated with pancreatitis
  • Post-ERCP acute pancreatitis
  • Recurrent pancreatitis
  • Secondary aplastic anemia
  • Subacute pancreatitis

Diagnostic Related Groups

The ICD-10 code K85.90 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Replacement Code

K8590 replaces the following previously assigned ICD-10 code(s):

  • K85.9 - Acute pancreatitis, unspecified

Convert K85.90 to ICD-9

  • 577.0 - Acute pancreatitis (Approximate Flag)

Code Classification

  • Diseases of the digestive system (K00–K93)
    • Disorders of gallbladder, biliary tract and pancreas (K80-K87)
      • Acute pancreatitis (K85)

Code History

  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


The pancreas is a large gland behind the stomach and close to the first part of the small intestine. It secretes digestive juices into the small intestine through a tube called the pancreatic duct. The pancreas also releases the hormones insulin and glucagon into the bloodstream.

Pancreatitis is inflammation of the pancreas. It happens when digestive enzymes start digesting the pancreas itself. Pancreatitis can be acute or chronic. Either form is serious and can lead to complications.

Acute pancreatitis occurs suddenly and usually goes away in a few days with treatment. It is often caused by gallstones. Common symptoms are severe pain in the upper abdomen, nausea, and vomiting. Treatment is usually a few days in the hospital for intravenous (IV) fluids, antibiotics, and medicines to relieve pain.

Chronic pancreatitis does not heal or improve. It gets worse over time and leads to permanent damage. The most common cause is heavy alcohol use. Other causes include cystic fibrosis and other inherited disorders, high levels of calcium or fats in the blood, some medicines, and autoimmune conditions. Symptoms include nausea, vomiting, weight loss, and oily stools. Treatment may also be a few days in the hospital for intravenous (IV) fluids, medicines to relieve pain, and nutritional support. After that, you may need to start taking enzymes and eat a special diet. It is also important to not smoke or drink alcohol.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

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