DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

N77 Vulvovaginal ulceration and inflammation in diseases classified elsewhere

  • Header · not billable

N77 is not billable. The category heads 2 billable codes in FY2027: the 2 codes directly below it.

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N70-N77 Inflammatory diseases of female pelvic organs (N70-N77)
  3. N77 Vulvovaginal ulceration and inflammation in diseases classified elsewhere
Billable codes
2
Subdivisions
2
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
3

Codes in N77

  1. N77.0
    Ulceration of vulva in diseases classified elsewhere
    Billable
    Excludes1 4, Code first 2

    Excludes1

    • ulceration of vulva in gonococcal infection (A54.02) A54.02
    • ulceration of vulva in herpesviral [herpes simplex] infection (A60.04) A60.04
    • ulceration of vulva in syphilis (A51.0) A51.0
    • ulceration of vulva in tuberculosis (A18.18) A18.18

    Code first

    • underlying disease, such as:
    • Behçet's disease (M35.2) M35.2
  2. N77.1
    Vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere
    Billable
    Excludes1 8, Code first 2

    Excludes1

    • candidal vulvovaginitis (B37.3-) B37.3
    • chlamydial vulvovaginitis (A56.02) A56.02
    • gonococcal vulvovaginitis (A54.02) A54.02
    • herpesviral [herpes simplex] vulvovaginitis (A60.04) A60.04
    • trichomonal vulvovaginitis (A59.01) A59.01
    • tuberculous vulvovaginitis (A18.18) A18.18
    • vulvovaginitis in early syphilis (A51.0) A51.0
    • vulvovaginitis in late syphilis (A52.76) A52.76

    Code first

    • underlying disease, such as:
    • pinworm (B80) B80

Sources of each column.

Instructions

Notes that also apply

Block N70-N77 instructions (Excludes1 3, Code also 1): printed on the block page.

Chapter 14 instructions (Excludes2 8): printed on the chapter 14 page.

Index entries

  • Vaginitis (acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative)in (due to)pinworm infection → B80 [N77.1]
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativevaginain Behçet's disease → M35.2 [N77.0]
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativevulva (acute) (infectional)in (due to)Behçet's disease → M35.2 [N77.0]

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

Hierarchy