N90Other noninflammatory disorders of vulva and perineum
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use N90 directly
Use the most specific code supported by the record.
- Chapter XIV
- Diseases of the genitourinary system
- Group N80-N98
- Noninflammatory disorders of female genital tract
- Official Vietnamese name
- Rối loạn khác không do viêm của âm hộ và/hoặc tầng sinh môn
- Additional WHO coding guidance
- Excl.: carcinoma in situ of vulva (D07.1) current obstetric trauma (O70.-, O71.7- O71.8) inflammation of vulva (N76.-)
Related N90 codes
N90.0
Primary diagnosis candidate
Mild vulvar dysplasia
N90.1
Primary diagnosis candidate
Moderate vulvar dysplasia
N90.2
Primary diagnosis candidate
Severe vulvar dysplasia, not elsewhere classified
N90.3
Primary diagnosis candidate
Dysplasia of vulva, unspecified
N90.4
Primary diagnosis candidate
Leukoplakia of vulva
N90.5
Primary diagnosis candidate
Atrophy of vulva
N90.6
Primary diagnosis candidate
Hypertrophy of vulva
N90.7
Primary diagnosis candidate
Vulvar cyst
N90.8
Primary diagnosis candidate
Other specified noninflammatory disorders of vulva and perineum
N90.9
Primary diagnosis candidate
Noninflammatory disorder of vulva and perineum, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
