E05.1
⚠ Non-billable
Thyrotoxicosis with toxic single thyroid nodule
ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases
Code
E05.1
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Endocrine, Nutritional and Metabolic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code E05.1?
ICD-10-CM code E05.1 represents Thyrotoxicosis with toxic single thyroid nodule. It is a non-billable header code requiring a more specific subcategory in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is E05.1 billable?
No. E05.1 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is E05.1 in?
E05.1 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.
Related codes in the E05 category
E05
Thyrotoxicosis [hyperthyroidism]
Non-billable
E05.0
Thyrotoxicosis with diffuse goiter
Non-billable
E05.2
Thyrotoxicosis with toxic multinodular goiter
Non-billable
E05.3
Thyrotoxicosis from ectopic thyroid tissue
Non-billable
E05.4
Thyrotoxicosis factitia
Non-billable
E05.8
Other thyrotoxicosis
Non-billable
E05.9
Thyrotoxicosis, unspecified
Non-billable
E05.00
Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm
Billable
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