ICD-10-CM Code C24.8

Malignant neoplasm of overlapping sites of biliary tract

Version 2021 Billable Code Neoplasm Malignant Primary

Valid for Submission

C24.8 is a billable code used to specify a medical diagnosis of malignant neoplasm of overlapping sites of biliary tract. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code C24.8 might also be used to specify conditions or terms like adenocarcinoma of gallbladder and extrahepatic biliary tract, malignant tumor of gallbladder, malignant tumor of gallbladder, overlapping malignant neoplasm of biliary tract, primary malignant neoplasm of gallbladder, squamous cell carcinoma of gallbladder and extrahepatic biliary tract, etc

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: Neoplasm, neoplastic bile or biliary (tract) duct or passage (common) (cystic) (extrahepatic) intrahepatic and extrahepatic or Neoplasm, neoplastic extrahepatic (bile) duct overlapping lesion with gallbladder or Neoplasm, neoplastic gallbladder overlapping lesion with extrahepatic bile ducts .

Short Description:Malignant neoplasm of overlapping sites of biliary tract
Long Description:Malignant neoplasm of overlapping sites of biliary tract

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code C24.8:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Malignant neoplasm involving both intrahepatic and extrahepatic bile ducts
  • Primary malignant neoplasm of two or more contiguous sites of biliary tract


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Adenocarcinoma of gallbladder and extrahepatic biliary tract
  • Malignant tumor of gallbladder
  • Malignant tumor of gallbladder
  • Overlapping malignant neoplasm of biliary tract
  • Primary malignant neoplasm of gallbladder
  • Squamous cell carcinoma of gallbladder and extrahepatic biliary tract

Diagnostic Related Groups

The ICD-10 code C24.8 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.


Convert C24.8 to ICD-9

  • 156.8 - Malig neo biliary NEC

Code Classification

  • Neoplasms (C00–D48)
    • Malignant neoplasms of digestive organs (C15-C26)
      • Malignant neoplasm of other and unsp parts of biliary tract (C24)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Table of Neoplasms

The code C24.8 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Neoplasm, neoplastic Malignant
CaInSitu Benign Uncertain
»Neoplasm, neoplastic
  »bile or biliary (tract)
    »duct or passage (common) (cystic) (extrahepatic)
        »and extrahepatic
»Neoplasm, neoplastic
  »extrahepatic (bile) duct
    »overlapping lesion with gallbladder
»Neoplasm, neoplastic
    »overlapping lesion with extrahepatic bile ducts

Information for Patients

Bile Duct Cancer

Also called: Cholangiocarcinoma

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.

Bile duct cancer is rare. It can happen in the parts of the bile ducts that are outside or inside the liver. Cancer of the bile duct outside of the liver is much more common. Risk factors include having inflammation of the bile duct, ulcerative colitis, and some liver diseases.

Symptoms can include

  • Jaundice
  • Itchy skin
  • Fever
  • Abdominal pain

Tests to diagnose bile duct cancer may include a physical exam, imaging tests of the liver and bile ducts, blood tests, and a biopsy.

Treatments include surgery, radiation therapy, and chemotherapy.

NIH: National Cancer Institute

  • Biliary stricture (Medical Encyclopedia)
  • Cholangiocarcinoma (Medical Encyclopedia)
  • ERCP (Medical Encyclopedia)

[Learn More]