8D64.04

ICD-11 MMS 2026-01

Normal-pressure hydrocephalus

Description

A clinical syndrome mainly comprising gait disturbance, dementia, and urinary incontinence, and associated with dilatation of the ventricular system of the brain. Most of the times demonstrating normal cerebrospinal fluid (CSF) pressure at lumbar puncture.

Index terms

  • Normal-pressure hydrocephalus
  • NPH - [normal pressure hydrocephalus]
  • normal pressure hydrocephalus NOS
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  • normal pressure hydrocephaly
  • Idiopathic normal-pressure hydrocephalus
  • Secondary normal-pressure hydrocephalus

Exclusions from above levels

  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
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  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • 8D64.00 – Increased cerebrospinal fluid production
  • 8D64.01 – Congenital agenesis of arachnoid villi
  • 8D64.02 – Post haemorrhagic hydrocephalus
  • 8D64.03 – Post traumatic hydrocephalus
  • 8D64.0Y – Other specified communicating hydrocephalus
  • 8D64.0Z – Communicating hydrocephalus, unspecified

Foundation entity

Normal-pressure hydrocephalus – http://id.who.int/icd/entity/1507346489

Allowed postcoordination axes

Part of: 8D64.0: Communicating hydrocephalus › 8D64: Hydrocephalus › 08: Diseases of the nervous system