ICD-10 · PDGM grouping
N90 Other noninflammatory disorders of vulva and perineum
All 16 codes in the N90 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
16
Can lead a claim
15
Cannot lead a claim
1
What CMS assigns to N90
15 of the 16 codes group to MMTA - Other (10) and MMTA - Gastrointestinal tract and Genitourinary system (5); 1 is assigned no clinical group. None of the 16 is assigned a comorbidity subgroup. 15 of the 16 can lead a claim.
Every code in N90
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| N90.0 | Mild vulvar dysplasia | Can lead a claim | A | None |
| N90.1 | Moderate vulvar dysplasia | Can lead a claim | J | None |
| N90.3 | Dysplasia of vulva, unspecified | Can lead a claim | J | None |
| N90.4 | Leukoplakia of vulva | Can lead a claim | J | None |
| N90.5 | Atrophy of vulva | Can lead a claim | A | None |
| N90.6 Hypertrophy of vulva | ||||
| N90.60 | Unspecified hypertrophy of vulva | Can lead a claim | A | None |
| N90.61 | Childhood asymmetric labium majus enlargement | Can lead a claim | A | None |
| N90.69 | Other specified hypertrophy of vulva | Can lead a claim | A | None |
| N90.7 | Vulvar cyst | Can lead a claim | J | None |
| N90.8 Other specified noninflammatory disorders of vulva and perineum | ||||
| N90.81 Female genital mutilation status | ||||
| N90.810 | Female genital mutilation status, unspecified | Can lead a claim | A | None |
| N90.811 | Female genital mutilation Type I status | Can lead a claim | A | None |
| N90.812 | Female genital mutilation Type II status | Can lead a claim | A | None |
| N90.813 | Female genital mutilation Type III status | Can lead a claim | A | None |
| N90.818 | Other female genital mutilation status | Can lead a claim | A | None |
| N90.89 | Other specified noninflammatory disorders of vulva and perineumCMS: Oth noninflammatory disorders of vulva and perineum | Can lead a claim | J | None |
| N90.9 | Noninflammatory disorder of vulva and perineum, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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