Malignant neoplasm of vulva (C51) ICD-10-CM
The C51 code range covers malignant neoplasm of vulva with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- carcinoma in situ of vulva D07.1
Codes in the C51 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C51 range.
Malignant Clitoral Neoplasm
A malignant neoplasm that affects the clitoris.
Malignant Labia Majora Neoplasm
A malignant neoplasm that affects the labia majora.
Malignant Labia Minora Neoplasm
A malignant neoplasm that affects the labia minora.
Malignant Vulvar Neoplasm
A primary or metastatic malignant neoplasm involving the vulva.
About the C51 Code Range
A malignant neoplasm of the vulva is a cancer that starts there or spreads there from elsewhere.
The subdivisions identify the site: the larger vulvar lip (C51.0), the smaller vulvar lip (C51.1), or the clitoris (C51.2). They also distinguish overlapping sites (C51.8) from an unspecified site within the vulva (C51.9).
Questions About This Page
How many billable codes are in the C51 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the C51 range classify?
The range classifies malignant neoplasm of vulva. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
