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E05.3

E05.3: Thyrotoxicosis from ectopic thyroid tissue

Non-billable headerICD-10-CM

E05.3 is a non-billable header ICD-10-CM code for thyrotoxicosis from ectopic thyroid tissue. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above E05.3

A category’s note binds every code beneath it.

Written on E05: Thyrotoxicosis [hyperthyroidism]

  • chronic thyroiditis with transient thyrotoxicosis (E06.2)
  • neonatal thyrotoxicosis (P72.1)

Risk adjustment

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

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead E05.3

2 child codes. Green means billable.

Other codes under E05

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.