GA20.00

ICD-11 MMS 2026-01

Primary amenorrhoea

Description

No menses by age 14 in the absence of growth or development of secondary sexual characteristics; or no menses by age 16 regardless of the presence of normal growth and development of secondary sexual characteristics.

Index terms

  • Primary amenorrhoea
  • delayed menses
  • failure of menstruation at puberty
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  • menstruation delay
  • primary physiologic amenorrhoea

Exclusions from above levels

  • 5A80 – Ovarian dysfunction
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 22 – Injury, poisoning or certain other consequences of external causes

Foundation children elsewhere

  • LB45.1 – 46,XX gonadal dysgenesis

Sibling codes

  • GA20.01 – Secondary amenorrhoea
  • GA20.02 – Lactational amenorrhoea
  • GA20.0Y – Other specified amenorrhoea
  • GA20.0Z – Amenorrhoea, unspecified

Foundation entity

Primary amenorrhoea – http://id.who.int/icd/entity/1154119206

Part of: GA20.0: Amenorrhoea › GA20: Menstrual cycle bleeding disorders › 16: Diseases of the genitourinary system