Other noninflammatory disorders of vulva and perineum (N90)
The ICD-10 code N90 category covers a variety of noninflammatory disorders affecting the vulva and perineum, including mild to moderate vulvar dysplasia, leukoplakia, atrophy, hypertrophy, cysts, and complications related to female genital mutilation. These codes help classify specific conditions such as vulval intraepithelial neoplasia, lichen sclerosus, and various hypertrophic or atrophic changes.
This section is used to identify and code distinct noninflammatory vulvar and perineal disorders, providing clarity for conditions like mild vulvar dysplasia (N90.0) and moderate vulvar dysplasia (N90.1), both known as vulval intraepithelial neoplasia (VIN). It also includes leukoplakia of vulva (N90.4), which is related to lichen sclerosus and certain precancerous changes. Atrophy and hypertrophy codes, such as N90.5 and N90.60, describe thinning or enlargement of vulvar tissues. The category uniquely encompasses the multiple types of female genital mutilation status (N90.81-series), aiding in documentation for these specific histories. Other codes include vulvar cysts (N90.7) and various other specified or unspecified noninflammatory conditions, ensuring detailed reporting of vulvar and perineal abnormalities without inflammation.
Diseases of the genitourinary system (N00–N99)
Noninflammatory disorders of female genital tract (N80-N98)
N90 Other noninflammatory disorders of vulva and perineum
- N90.0 Mild vulvar dysplasia
- N90.1 Moderate vulvar dysplasia
- N90.3 Dysplasia of vulva, unspecified
- N90.4 Leukoplakia of vulva
- N90.5 Atrophy of vulva
N90.6 Hypertrophy of vulva
- N90.60 Unspecified hypertrophy of vulva
- N90.61 Childhood asymmetric labium majus enlargement
- N90.69 Other specified hypertrophy of vulva
- N90.7 Vulvar cyst
N90.8 Other specified noninflammatory disorders of vulva and perineum
N90.81 Female genital mutilation status
- N90.810 Female genital mutilation status, unspecified
- N90.811 Female genital mutilation Type I status
- N90.812 Female genital mutilation Type II status
- N90.813 Female genital mutilation Type III status
- N90.818 Other female genital mutilation status
- N90.89 Other specified noninflammatory disorders of vulva and perineum
- N90.9 Noninflammatory disorder of vulva and perineum, unspecified
Other noninflammatory disorders of vulva and perineum (N90)
Instructional Notations
Type 1 Excludes
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.
