2026 ICD-10-CM Diagnosis Code C24Malignant neoplasm of other and unspecified parts of biliary tract
C24 is a non-billable ICD-10-CM category code for malignant neoplasm of other and unspecified parts of biliary tract, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C24.0, C24.1, C24.8, and C24.9.
Code Identity
Code Classification
Specific Coding for Malignant neoplasm of other and unsp parts of biliary tractOverview
Non-specific codes like C24 require more characters. Use one of these billable codes instead:
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- malignant neoplasm of intrahepatic bile duct C22.1
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Patient EducationClinical
Bile Duct Cancer
Your liver makes a digestive juice called bile. Your gallbladder stores it between meals. When you eat, your gallbladder pushes the bile into tubes called bile ducts. They carry the bile to your small intestine. The bile helps break down fat. It also helps the liver get rid of toxins and wastes.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About C24Overview
Is C24 a billable code?
No. This is a category header that groups the codes for malignant neoplasm of other and unspecified parts of biliary tract, and headers cannot be submitted on claims. Claims for malignant neoplasm of other and unspecified parts of biliary tract need a more specific code from this category, such as C24.0, C24.1, and C24.8.
