DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

N90 Other noninflammatory disorders of vulva and perineum

  • Header · not billable

N90 is not billable. The category heads 16 billable codes in FY2027, grouped under 9 subdivisions.

Index → code

  • Breisky's disease → N90.4
  • Leukokraurosis vulva(e) → N90.4
  • Female genital mutilation status (FGM) → N90.810

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N80-N98 Noninflammatory disorders of female genital tract (N80-N98)
  3. N90 Other noninflammatory disorders of vulva and perineum
Billable codes
16
Subdivisions
9
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
88

Codes in N90

  1. N90.0
    Mild vulvar dysplasia
    Billable
    Inclusion terms 1

    Inclusion terms

    • Vulvar intraepithelial neoplasia [VIN], grade I
  2. N90.1
    Moderate vulvar dysplasia
    Billable
    Inclusion terms 1

    Inclusion terms

    • Vulvar intraepithelial neoplasia [VIN], grade II
  3. N90.3
    Dysplasia of vulva, unspecified
    Billable
  4. N90.4
    Leukoplakia of vulva
    Billable
    Inclusion terms 3

    Inclusion terms

    • Dystrophy of vulva
    • Kraurosis of vulva
    • Lichen sclerosus of external female genital organs
  5. N90.5
    Atrophy of vulva
    Billable
    Inclusion terms 1

    Inclusion terms

    • Stenosis of vulva
  6. N90.6
    Hypertrophy of vulva
    Header
  7. N90.60
    Unspecified hypertrophy of vulva
    Billable
    Inclusion terms 1

    Inclusion terms

    • Unspecified hypertrophy of labia
  8. N90.61
    Childhood asymmetric labium majus enlargement
    Billable
    Inclusion terms 1

    Inclusion terms

    • CALME
  9. N90.69
    Other specified hypertrophy of vulva
    Billable
    Inclusion terms 1

    Inclusion terms

    • Other specified hypertrophy of labia
  10. N90.7
    Vulvar cyst
    Billable
  11. N90.8
    Other specified noninflammatory disorders of vulva and perineum
    Header
  12. N90.81
    Female genital mutilation status
    Header
    Inclusion terms 1

    Inclusion terms

    • Female genital cutting status
  13. N90.810
    Female genital mutilation status, unspecified
    Billable
    Inclusion terms 2

    Inclusion terms

    • Female genital cutting status, unspecified
    • Female genital mutilation status NOS
  14. N90.811
    Female genital mutilation Type I status
    Billable
    Inclusion terms 2

    Inclusion terms

    • Clitorectomy status
    • Female genital cutting Type I status
  15. N90.812
    Female genital mutilation Type II status
    Billable
    Inclusion terms 2

    Inclusion terms

    • Clitorectomy with excision of labia minora status
    • Female genital cutting Type II status
  16. N90.813
    Female genital mutilation Type III status
    Billable
    Inclusion terms 2

    Inclusion terms

    • Female genital cutting Type III status
    • Infibulation status
  17. N90.818
    Other female genital mutilation status
    Billable
    Inclusion terms 3

    Inclusion terms

    • Female genital cutting Type IV status
    • Female genital mutilation Type IV status
    • Other female genital cutting status
  18. N90.89
    Other specified noninflammatory disorders of vulva and perineum
    Billable
    Inclusion terms 2

    Inclusion terms

    • Adhesions of vulva
    • Hypertrophy of clitoris
  19. N90.9
    Noninflammatory disorder of vulva and perineum, unspecified
    Billable

Sources of each column.

Instructions

At N90

Excludes1

  • anogenital (venereal) warts (A63.0) A63.0
  • carcinoma in situ of vulva (D07.1) D07.1
  • condyloma acuminatum (A63.0) A63.0
  • current obstetric trauma (O70.-, O71.7-O71.8) O70 O71.7 O71.8
  • inflammation of vulva (N76.-) N76
  • severe dysplasia of vulva (D07.1) D07.1
  • vulvar intraepithelial neoplasm III [VIN III] (D07.1) D07.1

Notes that also apply

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

Index entries

  • Breisky's disease → N90.4
  • Leukokraurosis vulva(e) → N90.4
  • CALME (childhood asymmetric labium majus enlargement) → N90.61
  • Female genital mutilation status (FGM) → N90.810
  • Dysplasiavulva → N90.3
  • Dystrophy, dystrophiavulva → N90.4
  • Hyperkeratosisvulva → N90.4
  • Kraurosisvulva → N90.4
  • Leukoplakiavulva → N90.4
  • Vulvitis (acute) (allergic) (atrophic) (hypertrophic) (intertriginous) (senile)leukoplakic → N90.4
  • Atrophy, atrophic (of)vulva (senile) → N90.5
  • Closurevulva → N90.5
  • Occlusion, occludedvulva → N90.5
  • Stenosis, stenotic (cicatricial)vulva → N90.5
  • Stricturevulva (acquired) → N90.5
  • Hypertrophy, hypertrophiclabium (majus) (minus) → N90.60
  • Hypertrophy, hypertrophicvulva → N90.60
  • Enlargement, enlargedlabium majus, childhood asymmetric (CALME) → N90.61
  • Elongated, elongation (congenital)labia minora (acquired) → N90.69
  • Hyperplasia, hyperplasticlabia → N90.69
  • Hyperplasia, hyperplasticvulva → N90.69
  • Redundant, redundancylabia → N90.69
  • Cyst (colloid) (mucous) (simple) (retention)clitoris → N90.7
  • Cyst (colloid) (mucous) (simple) (retention)external female genital organs NEC → N90.7
  • Cyst (colloid) (mucous) (simple) (retention)labium (majus) (minus) → N90.7
  • Cyst (colloid) (mucous) (simple) (retention)vulva (implantation) (inclusion) → N90.7
  • Cyst (colloid) (mucous) (simple) (retention)vulvovaginal gland → N90.7
  • Female genital mutilation status (FGM)type I (clitorectomy status) → N90.811
  • Status (post)clitorectomy → N90.811
  • Female genital mutilation status (FGM)type II (clitorectomy with excision of labia minora status) → N90.812
  • Female genital mutilation status (FGM)type III (infibulation status) → N90.813
  • Status (post)infibulation → N90.813
  • Female genital mutilation status (FGM)specified NEC → N90.818
  • Female genital mutilation status (FGM)type IV → N90.818
  • Adherentlabia (minora) → N90.89
  • Adhesions, adhesive (postinfective)clitoris → N90.89
  • Adhesions, adhesive (postinfective)postpartal, old (vulva or perineum) → N90.89
  • Adhesions, adhesive (postinfective)vulva → N90.89
  • Caruncle (inflamed)labium (majus) (minus) → N90.89
  • Concretionclitoris → N90.89

48 more, longer entries are not listed; the search box finds them by word.

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

Hierarchy