ICD-10 Code K85.90 – Acute pancreatitis without necrosis or infection, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K85.90 – Acute pancreatitis without necrosis or infection, unspecified
What it is
This code identifies an acute inflammation of the pancreas without documented tissue death or infection, when the specific cause or type is not stated. Use it when the record confirms acute pancreatitis but does not provide more detail.
Clinical signs
Typical findings include sudden upper abdominal pain, nausea, vomiting, and abdominal tenderness. Clinical features vary; refer to documentation and imaging or provider assessment for confirmation.
When to use this code
Use K85.90 when the provider documents acute pancreatitis and does not specify necrosis, infection, or a more detailed subtype. It also fits cases where the note says pancreatitis is acute but leaves the cause unspecified.
If the chart later documents necrosis, infection, or another defined form, you should code the more specific diagnosis instead. Check documentation for etiology and any complications before assigning the unspecified code.
Do not use for
Do not use this code for chronic pancreatitis, pancreatitis with necrosis, or pancreatitis with infection. If the documentation is more specific, choose the matching code.
Coding tip
Review the full record for severity and etiology before defaulting to unspecified acute pancreatitis.