C51.9
C51.9: Malignant neoplasm of vulva, unspecified
Billable / specific codeICD-10-CM
C51.9 is a billable, specific ICD-10-CM code for malignant neoplasm of vulva, unspecified. It is valid for submission on a claim.
Check C51.9 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Malignant neoplasm of external female genitalia NOS
- Malignant neoplasm of pudendum
Risk adjustment
C51.9 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. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
C51.9 is named in 48 Medicare coverage policies: 48 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
- A52479Oral Anticancer Drugs - Policy Article
- A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
- A55717Billing and Coding: Lab: Flow Cytometry
Alphabetic index entries that lead here
- Melanoma›skin›female genital organ NEC(external)
- Melanoma›skin›labium
- Melanoma›skin›pudendum
- Melanoma›skin›vulva
Code history
Unchanged in every release from FY2024 to FY2027.