ICD-10-CM Code C51

Malignant neoplasm of vulva

Version 2021 Non-Billable Code

Not Valid for Submission

C51 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of malignant neoplasm of vulva. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:C51
Short Description:Malignant neoplasm of vulva
Long Description:Malignant neoplasm of vulva

Consider the following ICD-10 codes with a higher level of specificity:

  • C51.0 - Malignant neoplasm of labium majus
  • C51.1 - Malignant neoplasm of labium minus
  • C51.2 - Malignant neoplasm of clitoris
  • C51.8 - Malignant neoplasm of overlapping sites of vulva
  • C51.9 - ... unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code C51:

Type 1 Excludes

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

Code Classification

  • Neoplasms (C00–D48)
    • Malignant neoplasms of female genital organs (C51-C58)
      • Malignant neoplasm of vulva (C51)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Vulvar Cancer

Vulvar cancer is a rare type of cancer. It forms in a woman's external genitals, called the vulva. The cancer usually grows slowly over several years. First, precancerous cells grow on vulvar skin. This is called vulvar intraepithelial neoplasia (VIN), or dysplasia. Not all VIN cases turn into cancer, but it is best to treat it early.

Often, vulvar cancer doesn't cause symptoms at first. However, see your doctor for testing if you notice

  • A lump in the vulva
  • Vulvar itching or tenderness
  • Bleeding that is not your period
  • Changes in the vulvar skin, such as color changes or growths that look like a wart or ulcer

You are at greater risk if you've had a human papillomavirus (HPV) infection or have a history of genital warts. Your health care provider diagnoses vulvar cancer with a physical exam and a biopsy. Treatment varies, depending on your overall health and how advanced the cancer is. It might include surgery, radiation therapy, chemotherapy, or biologic therapy. Biologic therapy boosts your body's own ability to fight cancer.

NIH: National Cancer Institute

  • After chemotherapy - discharge (Medical Encyclopedia)
  • Cancer - vulva (Medical Encyclopedia)
  • Pelvic (between the hips) radiation - discharge (Medical Encyclopedia)
  • Vaginal and Vulvar Cancer (Centers for Disease Control and Prevention)

[Learn More]