ICD-10-CM Code C24

Malignant neoplasm of other and unspecified parts of biliary tract

Version 2021 Non-Billable Code

Not Valid for Submission

C24 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of malignant neoplasm of other and unspecified parts of biliary tract. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:C24
Short Description:Malignant neoplasm of other and unsp parts of biliary tract
Long Description:Malignant neoplasm of other and unspecified parts of biliary tract

Consider the following ICD-10 codes with a higher level of specificity:

  • 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

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:

Type 1 Excludes

Type 1 Excludes
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.
  • malignant neoplasm of intrahepatic bile duct C22.1

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

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]

Liver Cancer

Also called: Hepatocellular carcinoma

Your liver is the largest organ inside your body. It helps your body digest food, store energy, and remove poisons. Primary liver cancer starts in the liver. Metastatic liver cancer starts somewhere else and spreads to your liver.

Risk factors for primary liver cancer include

  • Having hepatitis B or C
  • Heavy alcohol use
  • Having cirrhosis, or scarring of the liver
  • Having hemochromatosis, an iron storage disease
  • Obesity and diabetes

Symptoms can include a lump or pain on the right side of your abdomen and yellowing of the skin. However, you may not have symptoms until the cancer is advanced. This makes it harder to treat. Doctors use tests that examine the liver and the blood to diagnose liver cancer. Treatment options include surgery, radiation, chemotherapy, or liver transplantation.

NIH: National Cancer Institute

  • Abdominal tap (Medical Encyclopedia)
  • After chemotherapy - discharge (Medical Encyclopedia)
  • Hepatocellular carcinoma (Medical Encyclopedia)
  • Liver metastases (Medical Encyclopedia)

[Learn More]