9C61.00

ICD-11 MMS 2026-01

Normal tension glaucoma

Description

Normal tension glaucoma is a condition considered to be within the continuum of primary open-angle glaucoma; the term is used when intraocular pressure is within the statistically normal range (10-21 mmHg).

Index terms

  • Normal tension glaucoma
  • LTG - [low tension glaucoma]
  • POAG/NPG - [Normal pressure primary open-angle glaucoma]
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  • low-tension glaucoma
  • normal pressure glaucoma
  • Primary low tension glaucoma
  • Residual stage low tension glaucoma

Exclusions from above levels

  • KA41 – Traumatic glaucoma due to birth injury
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 8A21.0 – Posterior cortical atrophy

Sibling codes

  • 9C61.01 – Ocular hypertension
  • 9C61.02 – High pressure primary open-angle glaucoma
  • 9C61.0Y – Other specified primary open-angle glaucoma
  • 9C61.0Z – Primary open-angle glaucoma, unspecified

Foundation entity

Normal tension glaucoma – http://id.who.int/icd/entity/361179921

Allowed postcoordination axes

Part of: 9C61.0: Primary open-angle glaucoma › 9C61: Glaucoma › 09: Diseases of the visual system