C56.1 — Malignant neoplasm of right ovary
C56.1 is a billable, specific ICD-10-CM code for malignant neoplasm of right ovary. It is valid for submission on a claim.
Other codes that can never be billed with C56.1
These codes carry an Excludes1 note pointing at C56.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C56.1 alone.
- C75Malignant neoplasm of other endocrine glands and related structures
Risk adjustment
C56.1 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 22 Bladder, Colorectal, and Other Cancers0.363 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
C56.1 is named in 110 Medicare coverage policies — 110 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52370Billing and Coding: Bevacizumab and biosimilars
- A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
- A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
- A52453Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs
Code history
C56.1 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share C56. If C56.1 is not quite right, the correct code is usually one of these.
Questions about C56.1
- Is C56.1 a billable ICD-10-CM code?
- Yes. C56.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does C56.1 sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of female genital organs (C51-C58).