All ICD10 Codes

N90

Non-Billable
ChapterN00–N99
Rankcategory
Official Description

Other noninflammatory disorders of vulva and perineum

Use a more specific code (7 billable, 2 non-billable)
N90.0Mild vulvar dysplasiaN90.1Moderate vulvar dysplasiaN90.3Dysplasia of vulva, unspecifiedN90.4Leukoplakia of vulvaN90.5Atrophy of vulvaN90.6Hypertrophy of vulvahas subcodesN90.7Vulvar cystN90.8Other specified noninflammatory disorders of vulva and perineumhas subcodesN90.9Noninflammatory disorder of vulva and perineum, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).

CH14 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • 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)

Clinical Hierarchy

BillableHas subcodes
CH14Diseases of the genitourinary system (N00-N99)
N80-N98Noninflammatory disorders of female genital tract (N80-N98)
N90Other noninflammatory disorders of vulva and perineumNot billable
N90.0Mild vulvar dysplasiaBillable
N90.1Moderate vulvar dysplasiaBillable
N90.3Dysplasia of vulva, unspecifiedBillable
N90.4Leukoplakia of vulvaBillable
N90.5Atrophy of vulvaBillable
N90.6Hypertrophy of vulvaSubcodes
N90.7Vulvar cystBillable
N90.8Other specified noninflammatory disorders of vulva and perineumSubcodes
N90.9Noninflammatory disorder of vulva and perineum, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N90:

chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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