9A23.1

ICD-11 MMS 2026-01

Acquired orbital cyst

Index terms

  • Acquired orbital cyst
  • Hydatic cyst
  • Primary optic nerve sheath cyst
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  • Mucocele of orbit
  • Hematic cyst of orbit
  • Parasitic cyst of orbit
  • Simple epithelial cyst of orbit
  • Cholesteatoma of orbit
  • Sudoriferous cyst of orbit
  • Dentigerous cyst of orbit
  • Respiratory cyst of orbit

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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  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 8A21.0 – Posterior cortical atrophy

Foundation children elsewhere

Sibling codes

  • 9A23.0 – Congenital orbital cyst
  • 9A23.Z – Orbital cyst, unspecified

Foundation entity

Acquired orbital cyst – http://id.who.int/icd/entity/1639301709

Allowed postcoordination axes

Part of: 9A23: Orbital cyst › 09: Diseases of the visual system