5B5K.0

ICD-11 MMS 2026-01

Iron deficiency

Description

Iron deficiency is a state in which there is insufficient iron to maintain the normal physiological function of blood, brain and muscles. It can exist in the absence of anaemia if it has not lasted long enough or if it has not been severe enough to cause the haemoglobin concentration to fall below the threshold for the specific sex and age group. Iron deficiency is the most common nutritional deficiency.

Index terms

  • Iron deficiency
  • Fe deficiency
  • Intellectual developmental disorder due to iron deficiency
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  • Iron depletion without anaemia

Excludes

  • 3A00 – Iron deficiency anaemia

Exclusions from above levels

  • 5C64 – Disorders of mineral absorption or transport
  • 1C62.3Y – slim disease
  • 6B80 – Anorexia Nervosa
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  • DA96.0 – Intestinal malabsorption
  • NF07.0 – starvation
  • 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

  • 3A00.0 – Acquired iron deficiency anaemia due to blood loss
  • 3A00.1 – Acquired iron deficiency anaemia due to low intake
  • 3A00.2 – Acquired iron deficiency anaemia due to decreased absorption
  • 3A00.3 – Acquired iron deficiency anaemia due to increased requirement

Sibling codes

  • 5B5K.1 – Calcium deficiency
  • 5B5K.2 – Zinc deficiency
  • 5B5K.3 – Iodine deficiency
  • 5B5K.4 – Fluorine deficiency
  • 5B5K.5 – Sodium chloride deficiency
  • 5B5K.6 – Copper deficiency
  • 5B5K.7 – Selenium deficiency
  • 5B5K.8 – Chromium deficiency
  • 5B5K.9 – Manganese deficiency
  • 5B5K.A – Molybdenum deficiency
  • 5B5K.B – Vanadium deficiency
  • 5B5K.Y – Other specified mineral deficiency
  • 5B5K.Z – Mineral deficiency, unspecified

Foundation entity

Iron deficiency – http://id.who.int/icd/entity/362161517

Allowed postcoordination axes

Part of: 5B5K: Mineral deficiencies › 05: Endocrine, nutritional or metabolic diseases