N90.1 – Moderate vulvar dysplasia

ICD-10-CM 2027 diagnosis code · Noninflammatory disorders of female genital tract

Billable code

ICD-10-CM code N90.1

Code: N90.1 (claims format: N901)
Description: Moderate vulvar dysplasia
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 14. Diseases of the genitourinary system (N00-N99)
Block: N80-N98 Noninflammatory disorders of female genital tract
Parent codes: N90

Notes for N90.1

Applicable to:

Vulvar intraepithelial neoplasia [VIN], grade II

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

N90 – Other noninflammatory disorders of vulva and perineum

Excludes1 (not coded here):

anogenital (venereal) warts (A63.0)
carcinoma in situ of vulva (D07.1)
condyloma acuminatum (A63.0)
current obstetric trauma (O70.-, O71.7-O71.8)
inflammation of vulva (N76.-)
severe dysplasia of vulva (D07.1)
vulvar intraepithelial neoplasm III [VIN III] (D07.1)

Index terms for N90.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in N90

N90.0 – Mild vulvar dysplasiaBillable
N90.3 – Dysplasia of vulva, unspecifiedBillable
N90.4 – Leukoplakia of vulvaBillable
N90.5 – Atrophy of vulvaBillable
N90.6 – Hypertrophy of vulvaHeader
N90.7 – Vulvar cystBillable
N90.8 – Other specified noninflammatory disorders of vulva and perineumHeader
N90.9 – Noninflammatory disorder of vulva and perineum, unspecifiedBillable

Frequently asked questions

What is ICD-10 code N90.1?

N90.1 is the ICD-10-CM code for moderate vulvar dysplasia, in the block N80-N98 (Noninflammatory disorders of female genital tract).

Is N90.1 a billable code?

Yes. N90.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does N90.1 belong to?

It belongs to category N90 – Other noninflammatory disorders of vulva and perineum.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.