E05.9

Non-billable

Thyrotoxicosis, unspecified

E05.9 is the ICD-10-CM code for Thyrotoxicosis, unspecified. It is a non-billable category code — use a more specific child code such as E05.90 for billing.

Status
Header (non-billable)
Chapter
E00-E89
Parent
E05
Subcodes
2
Edition
FY2026

E00-E89 Endocrine, nutritional and metabolic diseases

Includes

  • Hyperthyroidism NOS

Frequently asked questions

What is ICD-10 code E05.9?
E05.9 is the ICD-10-CM code for "Thyrotoxicosis, unspecified". It falls under E00-E89 Endocrine, nutritional and metabolic diseases.
Is E05.9 a billable code?
No — E05.9 is a non-billable header code. Use a more specific child code (such as E05.90) for billing.
What are the subcodes of E05.9?
E05.9 has 2 more specific child codes, including E05.90, E05.91.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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