5C71

ICD-11 MMS 2026-01

Hyperosmolality or hypernatraemia

Description

Serum sodium concentrations in excess of 145 mmol/L; increased serum concentration of osmotically active particles

Index terms

  • Hyperosmolality or hypernatraemia
  • Hyperosmolality
  • hyperosmolality syndrome
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  • hyperosmolar syndrome
  • nonketotic hyperosmolar syndrome
  • Hypernatraemia
  • sodium [na] excess
  • sodium [na] overload
  • sodium excess
  • sodium overload
  • sodium retention

Exclusions from above levels

  • 3A10.Z – Hereditary haemolytic anaemia due to enzyme deficiency
  • 5A71.01 – Congenital adrenal hyperplasia
  • 5A81.1 – 5-alpha-reductase deficiency
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  • LD28.01 – Marfan syndrome
  • LD28.1 – Ehlers-Danlos syndrome
  • LD2A.4 – androgen resistance syndrome
  • 18 – Pregnancy, childbirth or the puerperium
  • http://id.who.int/icd/entity/1004987305 – Transitory endocrine or metabolic disorders specific to fetus or newborn

Foundation children elsewhere

  • KB63.21 – Hypernatremia of newborn

Sibling codes

  • 5C70 – Volume depletion
  • 5C72 – Hypo-osmolality or hyponatraemia
  • 5C73 – Acidosis
  • 5C74 – Alkalosis
  • 5C75 – Mixed disorder of acid-base balance
  • 5C76 – Hyperkalaemia
  • 5C77 – Hypokalaemia
  • 5C78 – Fluid overload
  • 5C7Y – Other specified disorders of fluid, electrolyte or acid-base balance
  • 5C7Z – Disorders of fluid, electrolyte or acid-base balance, unspecified

Foundation entity

Hyperosmolality or hypernatraemia – http://id.who.int/icd/entity/1211006442

Part of: 05: Endocrine, nutritional or metabolic diseases