ICD-10 N90.1
Billable / SpecificModerate vulvar dysplasia
About ICD-10-CM N90.1
ICD-10-CM code N90.1 represents Moderate vulvar dysplasia. This is a billable/specific code in the Genitourinary System chapter (block N90). The 2026 edition of ICD-10-CM N90.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under N90.1. Per CMS ICD-10-CM Tabular 2026.
- Vulvar intraepithelial neoplasia [VIN], grade II
Medicare LCD Coverage for N90.1
Local Coverage Determinations (LCDs) from CMS MACs that list N90.1 as a covered diagnosis.
Showing top 10 of 197 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing N90.1.
4 Medicare
CPT Codes Commonly Billed with N90.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert N90.1 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| N90.1 | 62402 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To N90.1
Other codes in section N80-N98 (Noninflammatory disorders of female genital tract).
ICD-10 N90.1, Billing FAQ
Is ICD-10 code N90.1 billable? +
Yes, N90.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to N90.1? +
ICD-10 N90.1 includes: Vulvar intraepithelial neoplasia [VIN], grade II.
What ICD-9 codes does N90.1 map to? +
Per CMS GEMs, N90.1 maps to ICD-9 codes: 62402. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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