Acute pancreatitis
In Disorders of gallbladder, biliary tract and pancreas (K80-K87), chapter 11: Diseases of the Digestive System
18 billable codes under K85: all are an MCC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Instructional notes
Includes: conditions that are coded here
- acute (recurrent) pancreatitis
- subacute pancreatitis
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
There are no chapter-specific rules for Chapter 11 yet, so the general rules in Section I.B apply.
All codes under K85
K85 can't be used on a claim. Pick a billable code below; grey headings group them.
- K85.0Idiopathic acute pancreatitis
- K85.00Idiopathic acute pancreatitis without necrosis or infection
- K85.01Idiopathic acute pancreatitis with uninfected necrosis
- K85.02Idiopathic acute pancreatitis with infected necrosis
- K85.1Biliary acute pancreatitis
- K85.10Biliary acute pancreatitis without necrosis or infection
- K85.11Biliary acute pancreatitis with uninfected necrosis
- K85.12Biliary acute pancreatitis with infected necrosis
- K85.2Alcohol induced acute pancreatitis
- K85.20Alcohol induced acute pancreatitis without necrosis or infection
- K85.21Alcohol induced acute pancreatitis with uninfected necrosis
- K85.22Alcohol induced acute pancreatitis with infected necrosis
- K85.3Drug induced acute pancreatitis
- K85.30Drug induced acute pancreatitis without necrosis or infection
- K85.31Drug induced acute pancreatitis with uninfected necrosis
- K85.32Drug induced acute pancreatitis with infected necrosis
- K85.8Other acute pancreatitis
- K85.80Other acute pancreatitis without necrosis or infection
- K85.81Other acute pancreatitis with uninfected necrosis
- K85.82Other acute pancreatitis with infected necrosis
- K85.9Acute pancreatitis, unspecified
- K85.90Acute pancreatitis without necrosis or infection, unspecified
- K85.91Acute pancreatitis with uninfected necrosis, unspecified
- K85.92Acute pancreatitis with infected necrosis, unspecified
K85 MS-DRGs
As the principal diagnosis, all 18 billable codes under K85 group to MS-DRG 438, 439, 440, 791, or 793 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Other codes that refer to K85
Notes on these codes point to K85.
- E08 Code First: pancreatitis and other diseases of the pancreas (K85-K86.-)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Pancreatitis
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.
Read more about pancreatitis on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.