5A06

ICD-11 MMS 2026-01

Sick-euthyroid syndrome

Index terms

  • Sick-euthyroid syndrome
  • ESS - [euthyroid sick syndrome]
  • Low-T3 syndrome
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  • NTIS - [non-thyroidal illness syndrome]
  • TSCITUS - [thyroid allostasis in critical illness, tumours, uraemia and starvation]

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 – Hypothyroidism
  • 5A01 – Nontoxic goitre
  • 5A02 – Thyrotoxicosis
  • 5A03 – Thyroiditis
  • 5A04 – Hypersecretion of calcitonin
  • 5A05 – Generalised resistance to thyroid hormone
  • 5A0Y – Other specified disorders of the thyroid gland or thyroid hormones system
  • 5A0Z – Disorders of the thyroid gland or thyroid hormones system, unspecified

Foundation entity

Sick-euthyroid syndrome – http://id.who.int/icd/entity/998433478

Part of: 05: Endocrine, nutritional or metabolic diseases