GA18.6

ICD-11 MMS 2026-01

Other or unspecified ovarian cysts

Description

Any collection of fluid, surrounded by a very thin wall, within an ovary, which is not classified elsewhere. This includes any ovarian follicle that is larger than about two centimetres in diameter.

Index terms

  • Other or unspecified ovarian cysts
  • cyst of ovary NOS
  • cystic degeneration of ovary
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  • cystic ovarian disease
  • cystic ovary
  • cystic ovary disease
  • microcystic degeneration of ovary
  • Corpus albicans cyst of ovary
  • Retention cyst of ovary
  • Simple cyst of ovary

Excludes

  • 2C73 – ovarian cyst: neoplastic
  • 5A80.1 – Polycystic ovary syndrome
  • LB45.2 – ovarian cyst: developmental

Exclusions from above levels

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

Sibling codes

  • GA18.0 – Follicular cyst of ovary
  • GA18.1 – Corpus luteum cyst
  • GA18.2 – Theca lutein cyst
  • GA18.4 – Para ovarian cyst
  • GA18.5 – Torsion of ovary, ovarian pedicle or fallopian tube
  • GA18.7 – Acquired atrophy of ovary or fallopian tube
  • GA18.Y – Other specified acquired abnormalities of ovary
  • GA18.Z – Acquired abnormalities of ovary, unspecified

Foundation entity

Other or unspecified ovarian cysts – http://id.who.int/icd/entity/1481220289

Allowed postcoordination axes

Part of: GA18: Acquired abnormalities of ovary › 16: Diseases of the genitourinary system