C24: Malignant neoplasm of other and unspecified parts of biliary tract

Codes under C24 (Malignant neoplasm of other and unspecified parts of biliary tract). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
C24.0	Malignant neoplasm of extrahepatic bile duct	✓
C24.1	Malignant neoplasm of ampulla of Vater	✓
C24.8	Malignant neoplasm of overlapping sites of biliary tract	✓
C24.9	Malignant neoplasm of biliary tract, unspecified	✓

More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees

Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

Code the diagnosis right