5A00.03

ICD-11 MMS 2026-01

Transient congenital hypothyroidism

Description

Transient congenital hypothyroidism is defined as transient thyroid dysfunction with mildly elevated thyroid-stimulating hormone (TSH) and low thyroxine (FT4) levels which return to normal either very promptly and spontaneously, or after several months of thyroxine therapy. The disorder is due to a variety of causes including iodine deficiency or exposure to iodine-containing compounds, transplacental passage of blocking maternal antibodies, and dyshormonogenesis.

Index terms

  • Transient congenital hypothyroidism
  • Transient congenital hypothyroidism due to monoallelic or biallelic mutations of dual oxidase 2 mutation
  • Transient congenital hypothyroidism due to heterozygous mutations of monoallelic or biallelic mutations of DUOX2 mutation
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  • Transient congenital hypothyroidism due to maternal intake of antithyroid drugs
  • Transient congenital hypothyroidism due to maternal iodine deficiency or excess
  • Fetal iodine syndrome
  • Transient congenital hypothyroidism due to neonatal iodine deficiency or excess
  • Transient congenital hypothyroidism due to neonatal iodine exposure
  • Transient congenital hypothyroidism due to transplacental passage of maternal TSH receptor blocking antibodies
  • Transient congenital hypothyroidism due to heterozygous mutations of THOX2

Excludes

  • KB62.Y – Transitory congenital goitre with normal function

Exclusions from above levels

  • 18 – Pregnancy, childbirth or the puerperium
  • http://id.who.int/icd/entity/1004987305 – Transitory endocrine or metabolic disorders specific to fetus or newborn

Sibling codes

  • 5A00.00 – Permanent congenital hypothyroidism with diffuse goitre
  • 5A00.01 – Permanent congenital hypothyroidism without goitre
  • 5A00.02 – Pendred syndrome
  • 5A00.04 – Congenital hypothyroidism due to iodine deficiency
  • 5A00.0Y – Other specified congenital hypothyroidism
  • 5A00.0Z – Congenital hypothyroidism, unspecified

Foundation entity

Transient congenital hypothyroidism – http://id.who.int/icd/entity/592246939

Part of: 5A00.0: Congenital hypothyroidism › 5A00: Hypothyroidism › 05: Endocrine, nutritional or metabolic diseases