N92.6Irregular menstruation, unspecified
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Chapter XIV
- Diseases of the genitourinary system
- Group N80-N98
- Noninflammatory disorders of female genital tract
- Official Vietnamese name
- Kinh nguyệt thất thường, không xác định
- Additional WHO coding guidance
- Irregular: bleeding NOS periods NOS Excl.: irregular menstruation with: lengthened intervals or scanty bleeding (N91.3-N91.5) shortened intervals or excessive bleeding (N92.1)
Related N92 codes
N92
Excessive, frequent and irregular menstruation
N92.0
Primary diagnosis candidate
Excessive and frequent menstruation with regular cycle
N92.1
Primary diagnosis candidate
Excessive and frequent menstruation with irregular cycle
N92.2
Primary diagnosis candidate
Excessive menstruation at puberty
N92.3
Primary diagnosis candidate
Ovulation bleeding
N92.4
Primary diagnosis candidate
Excessive bleeding in the premenopausal period
N92.5
Primary diagnosis candidate
Other specified irregular menstruation
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.
