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E03.1

E03.1: Congenital hypothyroidism without goiter

Billable / specific codeICD-10-CM

E03.1 is a billable, specific ICD-10-CM code for congenital hypothyroidism without goiter. It is valid for submission on a claim.

Check E03.1 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Excludes1 inherited from the categories above E03.1

A category’s note binds every code beneath it.

Written on E03: Other hypothyroidism

  • iodine-deficiency related hypothyroidism (E00-E02)
  • postprocedural hypothyroidism (E89.0)

Other codes that can never be billed with E03.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • P72Other transitory neonatal endocrine disorders
  • Q89.2Congenital malformations of other endocrine glands
  • E03.4Atrophy of thyroid (acquired)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E03.1 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A57326Billing and Coding: Electrocardiograms
  • A57361Billing and Coding: Monitored Anesthesia Care

Alphabetic index entries that lead here

  • Agenesis›thyroid(gland)
  • Aplasia›thyroid(congenital) (with myxedema)
  • Athyrea›congenital
  • Hypoplasia, hypoplastic›thyroid(gland)
  • Hypothyroidism›congenital(without goiter)
  • Subthyroidism›congenital
  • Absence›thyroid›congenital
  • Atrophy, atrophic›thyroid›congenital(with myxedema)
  • Atrophy, atrophic›thyroid›with cretinism
  • Insufficiency, insufficient›thyroid›congenital
  • Jaundice›newborn›due to or associated with›hypothyroidism, congenital

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E03

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.