ICD-10 Code K85 – Acute pancreatitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K85 – Acute pancreatitis
What it is
Acute pancreatitis is a sudden inflammation of the pancreas. Use K85 when the record documents an acute episode, with or without a stated cause.
Clinical signs
Typical findings include upper abdominal pain, nausea, and vomiting. Clinical features vary; refer to documentation for severity, complications, and any confirmed etiology.
When to use this code
Use this code when the provider diagnoses acute pancreatitis during the encounter. Apply it whether the episode is first noted or being actively treated, if the documentation supports an acute inflammatory process. If the cause is specified, code the documented etiology and any associated complications as instructed.
Do not use for
Do not use K85 for chronic pancreatitis or for a history of pancreatitis without an active acute episode. Check documentation if the note only describes abdominal pain or an uncertain pancreatic disorder.
Coding tip
Look for the documented cause, since etiologic coding may be required in addition to K85.