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ICD-10 diagnosis code

N91.1 Secondary amenorrhoea

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N91.1 is the ICD-10 code for Secondary amenorrhoea. 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

Coding notes

  • Absence of menstruation in a woman who had previously menstruated.

N91.1 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

N91.1Sekundär amenorré

NorwayICD-10-NO

N91.1Sekundær amenoré

DenmarkICD-10-DK

DN911Sekundær amenoré

FinlandICD-10-FI

N91.1Sekundaarinen kuukautisten puuttuminen

GermanyICD-10-GM

N91.1Sekundäre Amenorrhoe

FranceICD-10-FR

N91.1Aménorrhée secondaire

NetherlandsICD-10-NL

N91.1secundaire amenorroe

United StatesICD-10-CM

N91.1Secondary amenorrhea

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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