N91.5 is the ICD-10 code for Oligomenorrhoea, unspecified. It is a four-character subcategory of N91 (Absent, scanty and rare menstruation), the most specific level in the WHO edition. It belongs to the block N80–N98 (Noninflammatory disorders of female genital tract) in Chapter XIV, Diseases of the genitourinary system.
- Code type
- Subcategory (4 characters)
- Chapter
- XIV · N00–N99
- Classification
- WHO ICD-10, 2019 version
What N91.5 includes
Conditions and terms that are coded here.
- Hypomenorrhoea NOS
N91.5 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
N91.5Uspesifisert oligomenoré
DN915Oligomenoré UNS
- DN915AHypomenoré UNS
- DN915COligohypomenoré UNS
N91.5Määrittämätön oligomenorrea
N91.5Oligomenorrhoe, nicht näher bezeichnet
N91.5Oligoménorrhée, sans précision
N91.5oligomenorroe, niet-gespecificeerd
N91.5Oligomenorrhea, unspecified
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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