ICD-10 Diagnosis Code C24.1

Malignant neoplasm of ampulla of Vater

Diagnosis Code C24.1

ICD-10: C24.1
Short Description: Malignant neoplasm of ampulla of Vater
Long Description: Malignant neoplasm of ampulla of Vater
This is the 2018 version of the ICD-10-CM diagnosis code C24.1

Valid for Submission
The code C24.1 is valid for submission for HIPAA-covered transactions.

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

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code C24.1 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • 156.2 - Mal neo ampulla of vater

  • Carcinoma common bile duct
  • Carcinoma of ampulla of Vater
  • Carcinoma of duodenum
  • Carcinoma of extrahepatic bile duct
  • Carcinoma of pancreas
  • Malignant epithelial neoplasm of small intestine
  • Malignant tumor of ampulla of Vater
  • Malignant tumor of exocrine pancreas
  • Malignant tumor of exocrine pancreas
  • Malignant tumor of pancreatic duct
  • Malignant tumor of pancreatic duct
  • Primary malignant neoplasm of ampulla of Vater
  • Primary malignant neoplasm of common bile duct
  • Primary malignant neoplasm of common bile duct
  • Primary malignant neoplasm of duodenum
  • Primary malignant neoplasm of duodenum
  • Primary malignant neoplasm of extrahepatic bile duct
  • Primary malignant neoplasm of extrahepatic bile duct
  • Primary malignant neoplasm of pancreatic duct

Table of Neoplasms

The code C24.1 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.

The Tabular must be reviewed for the complete diagnosis code.

Neoplasm, neoplastic Malignant
CaInSitu Benign Uncertain
»ampulla of Vater
»Vater's ampulla

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)
  • What to Know about External Beam Radiation Therapy - NIH - Easy-to-Read (National Cancer Institute)

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