ICD-10 Code K65.3 – Choleperitonitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K65.3 – Choleperitonitis
What it is
Choleperitonitis means inflammation of the peritoneum caused by bile leakage into the abdominal cavity. Use this code when documentation identifies bile-related peritonitis, not just generic abdominal infection.
Clinical signs
Typical findings include abdominal pain, guarding, tenderness, and signs of peritoneal irritation. Clinical features vary; refer to documentation, especially when the record links symptoms to bile in the peritoneal space.
When to use this code
Use K65.3 when the provider documents choleperitonitis, bile peritonitis, or peritoneal inflammation due to bile leakage. It may appear after biliary surgery, gallbladder disease, or other documented bile duct injury. Check documentation if the cause is unclear.
Do not use for
Do not use this code for nonspecific peritonitis, localized abdominal infection, or bile duct disease without peritoneal involvement. If the chart does not clearly state bile-related peritonitis, check documentation.
Coding tip
Code K65.3 only when the record explicitly connects peritonitis to bile leakage or choleperitoneal inflammation.