ICD-10 Diagnosis Code C51.9

Malignant neoplasm of vulva, unspecified

Diagnosis Code C51.9

ICD-10: C51.9
Short Description: Malignant neoplasm of vulva, unspecified
Long Description: Malignant neoplasm of vulva, unspecified
This is the 2019 version of the ICD-10-CM diagnosis code C51.9

Valid for Submission
The code C51.9 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Neoplasms (C00–D48)
    • Malignant neoplasms of female genital organs (C51-C58)
      • Malignant neoplasm of vulva (C51)
Version 2019 Billable Code Diagnoses For Females Only Neoplasm Malignant Primary

Information for Medical Professionals


Code Edits
The following edits are applicable to this code:
Diagnoses for females only - Diagnoses for females only.

Diagnostic Related Groups
The diagnosis code C51.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)

  • 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 to ICD-9
  • 184.4 - Malign neopl vulva NOS

Synonyms
  • 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
  • Genital warts
  • Invasive vulval Paget's disease
  • Malignant melanoma of perineum
  • 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
  • Primary vulval cancer
  • 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
  • Widespread metastatic malignant neoplastic disease

Index to Diseases and Injuries
References found for the code C51.9 in the Index to Diseases and Injuries:


Tabular List of Diseases and Injuries
References found for the code C51.9 in the Tabular List of Diseases and Injuries:

  • Inclusion Terms:
    • Malignant neoplasm of external female genitalia NOS
    • Malignant neoplasm of pudendum

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.

The Tabular must be reviewed for the complete diagnosis code.

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

  • After chemotherapy - discharge (Medical Encyclopedia)
  • Cancer - vulva (Medical Encyclopedia)
  • Pelvic (between the hips) radiation - discharge (Medical Encyclopedia)
  • Understanding Chemotherapy - NIH - Easy-to-Read (National Cancer Institute)
  • Vaginal and Vulvar Cancer (Centers for Disease Control and Prevention)
  • What to Know about External Beam Radiation Therapy - NIH - Easy-to-Read (National Cancer Institute)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - 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.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. 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.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

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