Other noninflammatory disorders of vulva and perineum (N90) ICD-10-CM
The N90 code range covers other noninflammatory disorders of vulva and perineum with 20 ICD-10-CM diagnosis codes. 16 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
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.
Codes in the N90 Range 20 codes · 16 billable
- N90 Other noninflammatory disorders of vulva and perineumNon-billable
- 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 vulvaNon-billable
- 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 perineumNon-billable
- N90.81 Female genital mutilation statusNon-billable
- 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
About the N90 Code Range
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.
Questions About This Page
How many billable codes are in the N90 range?
Of the 20 codes in this range, 16 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the N90 range classify?
The range classifies other noninflammatory disorders of vulva and perineum. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
