2025 ICD-10-CM Diagnosis Code E03.1

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Congenital hypothyroidism without goiter

  • E03.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM E03.1 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of E03.1 – other international versions of ICD-10 E03.1 may differ.

Applicable To

  • Aplasia of thyroid (with myxedema)
  • Congenital atrophy of thyroid
  • Congenital hypothyroidism NOS

The following code(s) above E03.1 contain annotation back-references

 that may be applicable to E03.1:

  • E00-E89  Endocrine, nutritional and metabolic diseases
  • E03  Other hypothyroidism

Approximate Synonyms

  • Congenital hypothyroidism
  • Hypothyroidism, congenital

Clinical Information

  • A condition in infancy or early childhood due to an in-utero deficiency of thyroid hormones that can be caused by genetic or environmental factors, such as thyroid dysgenesis or hypothyroidism in infants of mothers treated with thiouracil during pregnancy. Endemic cretinism is the result of iodine deficiency. Clinical symptoms include severe mental retardation, impaired skeletal development, short stature, and myxedema.
  • A deficiency of thyroid hormone present at birth. The etiology can be genetic or environmental, or a combination of both; treatment is based on severity and causality.
  • Condition due to congenital lack of thyroid hormone, marked by arrested physical and mental development, dystrophy of the bones and soft parts, and lowered basal metabolism; it is the congenital form of thyroid deficiency, while myxedema is the acquired form.

ICD-10-CM E03.1 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 643 Endocrine disorders with mcc
  • 644 Endocrine disorders with cc
  • 645 Endocrine disorders without cc/mcc

Convert E03.1 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Code annotations containing back-references to E03.1:

Diagnosis Index entries containing back-references to E03.1:

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