K85.9

⚠ Non-billable (Header)

Acute pancreatitis, unspecified

Diseases of the digestive system (K00-K95)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Pancreatitis NOS

✓ No additional coding notes for K85.9

Child Codes (3)

K85.90Acute pancreatitis without necrosis or infection, unspecified✓ Billable K85.91Acute pancreatitis with uninfected necrosis, unspecified✓ Billable K85.92Acute pancreatitis with infected necrosis, unspecified✓ Billable

Clinical Description

ICD-10-CM code K85.9 represents acute pancreatitis, unspecified. This code falls under the Diseases of the digestive system (K00-K95) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 5-character code at the 4th level of specificity. There are 3 more specific child codes under K85.9.

Frequently Asked Questions

What is ICD-10 code K85.9?

ICD-10-CM code K85.9 is "Acute pancreatitis, unspecified". It belongs to the category: Diseases of the digestive system (K00-K95).

Is K85.9 a billable ICD-10 code?

No, K85.9 is a non-billable header code. A more specific child code must be used for billing.

Related Codes in K85

Other codes in the same category that may be relevant for differential coding:

K85.0Idiopathic acute pancreatitis K85.1Biliary acute pancreatitis K85.2Alcohol induced acute pancreatitis K85.3Drug induced acute pancreatitis K85.8Other acute pancreatitis

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Code Information

CodeK85.9

BillableNo — Header code

ParentK85

CategoryDiseases of the digestive system (K00-K95)

Excludes10 rule(s)

Excludes20 note(s)

Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)