ICD-10-CM Code C51.9

Malignant neoplasm of vulva, unspecified

Version 2020 Billable Code Diagnoses For Females Only Neoplasm Malignant Primary

Valid for Submission

C51.9 is a billable code used to specify a medical diagnosis of malignant neoplasm of vulva, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code C51.9 might also be used to specify conditions or terms like anogenital verrucous carcinoma of buschke-löwenstein, basal cell carcinoma of truncal skin, basal cell carcinoma of vulva, cancer of vulva, disseminated, carcinoma of vulva, figo stage finding for vulvar melanoma, etc

The code C51.9 is applicable to female patients only. It is clinically and virtually impossible to use this code on a non-female patient.

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: fourchette ; labia (skin) ; labium (skin) ; mons ; mons pubis ; mons veneris ; pudenda, pudendum (femaie) ; etc

ICD-10:C51.9
Short Description:Malignant neoplasm of vulva, unspecified
Long Description:Malignant neoplasm of vulva, 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 C51.9:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Malignant neoplasm of external female genitalia NOS
  • Malignant neoplasm of pudendum

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code C51.9 are found in the index:


Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

  • Diagnoses for females only - Medicare Code Editor detects inconsistencies between a patient’s sex and any diagnosis on the patient’s record, this code applies to FEMALES only .

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Anogenital verrucous carcinoma of Buschke-Löwenstein
  • Basal cell carcinoma of truncal skin
  • Basal cell carcinoma of vulva
  • Cancer of vulva, disseminated
  • Carcinoma of vulva
  • FIGO stage finding for vulvar melanoma
  • FIGO stage finding for vulvar melanoma
  • FIGO stage finding for vulvar melanoma
  • FIGO stage finding for vulvar melanoma
  • FIGO stage finding for vulvar melanoma
  • FIGO VC stage I
  • FIGO VC stage IA
  • FIGO VC stage IB
  • FIGO VC stage II
  • FIGO VC stage III
  • FIGO VC stage IIIA
  • FIGO VC stage IIIB
  • FIGO VC stage IV
  • FIGO VC stage IVA
  • FIGO VC stage IVB
  • FIGO VM stage I
  • FIGO VM stage II
  • FIGO VM stage III
  • FIGO VM stage IV
  • FIGO VM stage V
  • Infective dermatosis of female genitalia
  • Invasive vulval Paget's disease
  • Malignant melanoma of skin of perineum
  • Malignant melanoma of skin of vulva
  • Malignant melanoma of vulva
  • Malignant tumor of vulva
  • Paget's disease of vulva
  • pM1
  • pN1
  • pN1
  • pN1
  • pN1: Unilateral regional lymph node metastasis
  • pN2
  • pN2
  • pN2: Bilateral regional lymph node metastasis
  • Primary adenocarcinoma of vulva
  • Primary malignant neoplasm of skin of perineum
  • Primary malignant neoplasm of skin of perineum
  • Primary malignant neoplasm of vulva
  • pT1
  • pT1a
  • pT1b
  • pT2
  • pT3
  • pT4
  • Recurrent primary malignant neoplasm of vulva
  • Sarcoma of vulva
  • Squamous cell carcinoma of anogenital area
  • Squamous cell carcinoma of anogenital area
  • Squamous cell carcinoma of anogenital area
  • Squamous cell carcinoma of skin of trunk
  • Squamous cell carcinoma of vulva
  • Squamous cell carcinoma of vulva due to lichen sclerosus
  • Verrucous squamous cell carcinoma
  • Vulval verrucous carcinoma of Buschke-Löwenstein
  • Vulvovaginal rhabdomyosarcoma
  • Widespread metastatic malignant neoplastic disease

Diagnostic Related Groups

The ICD-10 code C51.9 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2020.

  • 736 - UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITH MCC
  • 737 - UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITH CC
  • 738 - UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITHOUT CC/MCC
  • 739 - UTERINE, ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITH MCC
  • 740 - UTERINE, ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITH CC
  • 741 - UTERINE, ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITHOUT CC/MCC

Convert C51.9 to ICD-9

  • 184.4 - Malign neopl vulva NOS

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

Table of Neoplasms

The code C51.9 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»fourchette
C51.9C79.82D07.1D28.0D39.8D49.59
»labia (skin)
C51.9C79.82D07.1D28.0D39.8D49.59
»labium (skin)
C51.9C79.82D07.1D28.0D39.8D49.59
»mons
C51.9C79.82D07.1D28.0D39.8D49.59
»mons
  »pubis
C51.9C79.82D07.1D28.0D39.8D49.59
»mons
  »veneris
C51.9C79.82D07.1D28.0D39.8D49.59
»pudenda, pudendum (femaie)
C51.9C79.82D07.1D28.0D39.8D49.59
»skin NOS
  »female genital organs (external)
C51.9C79.82D07.1D28.0D39.8D49.59
»skin NOS
  »female genital organs (external)
    »labium NEC
C51.9C79.82D07.1D28.0D39.8D49.59
»skin NOS
  »female genital organs (external)
    »pudendum
C51.9C79.82D07.1D28.0D39.8D49.59
»skin NOS
  »female genital organs (external)
    »vulva
C51.9C79.82D07.1D28.0D39.8D49.59
»skin NOS
  »vulva
C51.9C79.82D07.1D28.0D39.8D49.59
»vulva
C51.9C79.82D07.1D28.0D39.8D49.59

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


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