C24.0 – Malignant neoplasm of extrahepatic bile duct

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of digestive organs

Billable code

ICD-10-CM code C24.0

Code: C24.0 (claims format: C240)
Description: Malignant neoplasm of extrahepatic bile duct
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: C15-C26 Malignant neoplasms of digestive organs
Parent codes: C24

Notes for C24.0

Applicable to:

Malignant neoplasm of biliary duct or passage NOS
Malignant neoplasm of common bile duct
Malignant neoplasm of cystic duct
Malignant neoplasm of hepatic duct

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

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

Excludes1 (not coded here):

malignant neoplasm of intrahepatic bile duct (C22.1)

Block C15-C26

Excludes1 (not coded here):

Kaposi's sarcoma of gastrointestinal sites (C46.4)

Excludes2 (not included here):

gastrointestinal stromal tumors (C49.A-)

Index terms for C24.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in C24

Frequently asked questions

What is ICD-10 code C24.0?

C24.0 is the ICD-10-CM code for malignant neoplasm of extrahepatic bile duct, in the block C15-C26 (Malignant neoplasms of digestive organs).

Is C24.0 a billable code?

Yes. C24.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C24.0 belong to?

It belongs to category C24 – Malignant neoplasm of other and unspecified parts of biliary tract.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.