5C64.41

ICD-11 MMS 2026-01

Hypomagnesaemia

Description

This is an electrolyte disturbance in which there is an abnormally low level of magnesium in the blood. Normal magnesium levels in humans fall between 1.5 - 2.5 mg/dL. Usually a serum level less than 0.7 mmol/L is used as reference for hypomagnesemia (not hypomagnesia which refers to low magnesium content in food/supplement sources).

Index terms

  • Hypomagnesaemia
  • Magnesium deficiency
  • Primary familial hypomagnesaemia
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  • Familial hypokalaemia - hypercalciuria
  • Familial hypokalaemia - hypomagnesaemia
  • Gitelman syndrome
  • Primary renal tubular hypokalaemic hypomagnesaemia with hypocalciuria
  • Familial hypomagnesaemia - hypercalciuria - nephrocalcinosis - severe ocular involvement
  • Familial primary hypomagnesemia with hypercalciuria and nephrocalcinosis with severe ocular involvement
  • Hypercalciuria - bilateral macular coloboma
  • Meier-Blumberg-Imahorn syndrome
  • Familial hypomagnesaemia - hypercalciuria - nephrocalcinosis
  • HOMG3 - [Renal hypomagnesaemia type 3]
  • Renal hypomagnesaemia type 3
  • Glaudemans type isolated autosomal dominant hypomagnesaemia
  • Isolated autosomal dominant hypomagnesemia, Glaudemans type
  • Hypomagnesaemia due to selective magnesium malabsorption
  • HOMG1 - [Intestinal hypomagnesaemia type 1]
  • Intestinal hypomagnesaemia type 1
  • Intestinal hypomagnesaemia with secondary hypocalcaemia
  • Isolated familial intestinal hypomagnesaemia
  • Magnesium malabsorption
  • Hypomagnesaemia with hypocalciuria
  • HOMG2 - [Renal hypomagnesaemia type 2]
  • Isolated dominant hypomagnesaemia
  • Renal hypomagnesaemia type 2
  • Hypomagnesaemia with normocalciuria
  • HOMG4 - [Renal hypomagnesaemia type 4]
  • Renal hypomagnesaemia type 4
  • Secondary hypomagnesaemia
  • Drug-induced hypomagnesaemia
  • medicament-induced hypomagnesaemia

Exclusions from above levels

  • 5B57 – Vitamin D deficiency
  • 5B5K – dietary mineral deficiency
  • http://id.who.int/icd/entity/962023213 – Disorders of the parathyroids or parathyroid hormone system
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  • 3A10.Z – Hereditary haemolytic anaemia due to enzyme deficiency
  • 5A71.01 – Congenital adrenal hyperplasia
  • 5A81.1 – 5-alpha-reductase deficiency
  • 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

  • KB61.0 – Neonatal hypomagnesaemia

Sibling codes

  • 5C64.40 – Hypermagnesaemia
  • 5C64.4Z – Disorders of magnesium metabolism, unspecified

Foundation entity

Hypomagnesaemia – http://id.who.int/icd/entity/1499531377

Allowed postcoordination axes

Part of: 5C64.4: Disorders of magnesium metabolism › 5C64: Disorders of mineral absorption or transport › 05: Endocrine, nutritional or metabolic diseases