E05.1Header code — not billable
Thyrotoxicosis with toxic single thyroid nodule
- Chapter
- 4. Endocrine, nutritional and metabolic diseases
- Category
- E05
- Effective date
- October 1, 2026
Related codes in category E05
E05Thyrotoxicosis [hyperthyroidism]E05.0Thyrotoxicosis with diffuse goiterE05.00Thyrotoxicosis w diffuse goiter w/o thyrotoxic crisisYesE05.01Thyrotoxicosis w diffuse goiter w thyrotoxic crisis or stormYesE05.10Thyrotxcosis w toxic sing thyroid nodule w/o thyrotxc crisisYesE05.11Thyrotxcosis w toxic single thyroid nodule w thyrotxc crisisYesE05.2Thyrotoxicosis with toxic multinodular goiterE05.20Thyrotxcosis w toxic multinod goiter w/o thyrotoxic crisisYesE05.21Thyrotxcosis w toxic multinodular goiter w thyrotoxic crisisYesE05.3Thyrotoxicosis from ectopic thyroid tissueE05.30Thyrotxcosis from ectopic thyroid tissue w/o thyrotxc crisisYesE05.31Thyrotxcosis from ectopic thyroid tissue w thyrotoxic crisisYes
Frequently asked questions
What is ICD-10 code E05.1?
E05.1 is an ICD-10-CM diagnosis code for Thyrotoxicosis with toxic single thyroid nodule.
Is E05.1 a billable code?
No. E05.1 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is E05.1 in?
E05.1 falls under Chapter 4: Endocrine, nutritional and metabolic diseases.
When did E05.1 become effective?
E05.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to E05.1?
E05.1 belongs to category E05, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.