C24.9 — Malignant neoplasm of biliary tract, unspecified
C24.9 is a billable, specific ICD-10-CM code for malignant neoplasm of biliary tract, unspecified. It is valid for submission on a claim.
Other codes that can never be billed with C24.9
These codes carry an Excludes1 note pointing at C24.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C24.9 alone.
- C22Malignant neoplasm of liver and intrahepatic bile ducts
Risk adjustment
C24.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 20 Lung and Other Severe Cancers1.136 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
C24.9 is named in 47 Medicare coverage policies — 47 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52479Oral Anticancer Drugs - Policy Article
- A52479Oral Anticancer Drugs - Policy Article
- A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
- A53101Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID® Update
Related codes at this level
Codes that share C24. If C24.9 is not quite right, the correct code is usually one of these.
Questions about C24.9
- Is C24.9 a billable ICD-10-CM code?
- Yes. C24.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does C24.9 sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of digestive organs (C15-C26).