C24.8

Malignant neoplasm of overlapping sites of biliary tract

Billable / specificHCC V28 20

C24.8 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Malignant neoplasm involving both intrahepatic and extrahepatic bile ducts
  • Primary malignant neoplasm of two or more contiguous sites of biliary tract

Includes (from C24)

  • Note: Functional activity
  • Note: All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Note: Morphology [Histology]
  • Note: Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Note: Primary malignant neoplasms overlapping site boundaries
  • Note: A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Note: Malignant neoplasm of ectopic tissue
  • Note: Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Excludes1

Not coded here — never report together with this code.

  • Kaposi's sarcoma of gastrointestinal sites (C46.4) (from C24)
  • malignant neoplasm of intrahepatic bile duct (C22.1) (from C24)

Excludes2

Not included here — may be reported together when both conditions exist.

  • gastrointestinal stromal tumors (C49.A-) (from C24)

Also known as

  • Malignant neoplasm involving both intrahepatic and extrahepatic bile ducts
  • Primary malignant neoplasm of two or more contiguous sites of biliary tract

Parent code

  • C24Malignant neoplasm of other and unspecified parts of biliary tractHeader

Related codes

  • C24.0Malignant neoplasm of extrahepatic bile ductBillable
  • C24.1Malignant neoplasm of ampulla of VaterBillable
  • C24.9Malignant neoplasm of biliary tract, unspecifiedBillable

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