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E04.1

E04.1: Nontoxic single thyroid nodule

Billable / specific codeICD-10-CM

E04.1 is a billable, specific ICD-10-CM code for nontoxic single thyroid nodule. It is valid for submission on a claim.

Check E04.1 with the rest of the claim: free scrubber

Inclusion terms

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

  • Colloid nodule (cystic) (thyroid)
  • Nontoxic uninodular goiter
  • Thyroid (cystic) nodule NOS

Excludes1 inherited from the categories above E04.1

A category’s note binds every code beneath it.

Written on E04: Other nontoxic goiter

  • congenital goiter (NOS) (diffuse) (parenchymatous) (E03.0)
  • iodine-deficiency related goiter (E00-E02)

Risk adjustment

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

Medicare coverage

E04.1 is named in 12 Medicare coverage policies: 12 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52986Billing and Coding: Biomarkers for Oncology
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56729Billing and Coding: Magnetic Resonance Imaging of the Head and Neck
  • A57029Billing and Coding: Ultrasound, Soft Tissues of Head and Neck

Alphabetic index entries that lead here

  • Colloid nodule(of thyroid) (cystic)
  • Cyst›thyroid(gland)
  • Goiter›uninodular(nontoxic)
  • Nodule, nodular›colloid, thyroid(cystic)
  • Nodule, nodular›thyroid(cold) (gland) (nontoxic)
  • Thyroid›nodule(cystic) (nontoxic) (single)
  • Goiter›nontoxic›uninodular
  • Struma›nodosa›uninodular

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E04

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.