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N90.4 ICD-10-CA code: Leukoplakia of vulva

N90.4 is the ICD-10-CA code for “Leukoplakia of vulva” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

N90.4

Leukoplakia of vulva

ICD-10-CA · Canada · Also written N904

Index terms

Entries in CIHI’s alphabetical index that lead to N90.4. Searching the index by the condition the note names is how coders reach this code.

  • Kraurosis, vulva
  • Breisky's disease
  • Leukoplakia, vulva
  • Lichen, albus, vulva
  • Hyperkeratosis, vulva
  • Leukokraurosis vulva(e)
  • Lichen, atrophicus, vulva
  • Dystrophy, dystrophia, vulva
  • Lichen, sclerosus (et atrophicus), vulva
  • Disease, diseased, white spot, meaning lichen sclerosus et atrophicus, vulva
  • Vulvitis (acute) (allergic) (aphthous) (atrophic) (gangrenous) (hypertrophic) (intertriginous) (senile), leukoplakic

Notes for N90.4

As CIHI prints them, with any note N90.4 takes from the headings above it.

Includes

  • Dystrophy, Kraurosis of vulva

Excludes

Conditions classified elsewhere.

  • Carcinoma in situ of vulva (D07.1)current obstetric trauma (O70.-, O71.7-O71.8)inflammation of vulva (N76.-)From N90 Other noninflammatory disorders of vulva and perineum
  • Certain conditions originating in the perinatal period (P00-P96)certain infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 14: Diseases of the genitourinary system (N00-N99)

Where N90.4 sits

  1. 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
  2. 2Block N80-N98Noninflammatory disorders of female genital tract
  3. 3Category N90Other noninflammatory disorders of vulva and perineum
  4. 4Valid code N90.4Leukoplakia of vulva

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See N90.4 in the CIHI source

Frequently asked questions

What does ICD-10-CA code N90.4 mean?

N90.4 is the ICD-10-CA code for “Leukoplakia of vulva” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is N90.4 in ICD-10-CA?

N90.4 sits under N90 Other noninflammatory disorders of vulva and perineum, within N80-N98 Noninflammatory disorders of female genital tract, within Chapter 14: Diseases of the genitourinary system (N00-N99).

What coding notes apply to N90.4?

ICD-10-CA lists Includes, Excludes notes for N90.4, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside N90.4

N90.0Mild vulvar dysplasiaN90.1Moderate vulvar dysplasiaN90.2Severe vulvar dysplasia, not elsewhere classifiedN90.3Dysplasia of vulva, unspecifiedN90.5Atrophy of vulvaN90.6Hypertrophy of vulvaN90.7Vulvar cystN90.8Other specified noninflammatory disorders of vulva and perineumN90.9Noninflammatory disorder of vulva and perineum, unspecified