DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C51 Malignant neoplasm of vulva

  • Header · not billable

C51 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

Index → code

  • Melanoma (malignant)skinvulva → C51.9
  • Melanoma (malignant)skinlabium → C51.9
  • Melanoma (malignant)skinpudendum → C51.9

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C51-C58 Malignant neoplasms of female genital organs (C51-C58)
  3. C51 Malignant neoplasm of vulva
Billable codes
5
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
5
New FY2027
0
Index entries
7

Codes in C51

  1. C51.0
    Malignant neoplasm of labium majus
    Billable22
    Inclusion terms 1

    Inclusion terms

    • Malignant neoplasm of Bartholin's [greater vestibular] gland
  2. C51.1
    Malignant neoplasm of labium minus
    Billable22
  3. C51.2
    Malignant neoplasm of clitoris
    Billable22
  4. C51.8
    Malignant neoplasm of overlapping sites of vulva
    Billable22
  5. C51.9
    Malignant neoplasm of vulva, unspecified
    Billable22
    Inclusion terms 2

    Inclusion terms

    • Malignant neoplasm of external female genitalia NOS
    • Malignant neoplasm of pudendum

Sources of each column.

Instructions

At C51

Excludes1

  • carcinoma in situ of vulva (D07.1) D07.1

Notes that also apply

Block C51-C58 instructions (Includes 1): printed on the block page.

Chapter 2 instructions (Notes 8): printed on the chapter 2 page.

Index entries

  • Melanoma (malignant)skinfemale genital organ (external) NEC → C51.9
  • Melanoma (malignant)skinlabium → C51.9
  • Melanoma (malignant)skinpudendum → C51.9
  • Melanoma (malignant)skinvulva → C51.9
  • Melanoma (malignant)skinlabiummajus → C51.0
  • Melanoma (malignant)skinlabiumminus → C51.1
  • Melanoma (malignant)skinvulvaoverlapping sites → C51.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy