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E66.0

Non-billable

Obesity due to excess calories

E66.0 is the ICD-10-CM code for Obesity due to excess calories. It is a non-billable category code — use a more specific child code such as E66.01 for billing.

Status
Header (non-billable)
Chapter
E00-E89
Parent
E66
Subcodes
2
Edition
FY2026

E00-E89 Endocrine, nutritional and metabolic diseases

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code E66.0?
E66.0 is the ICD-10-CM code for "Obesity due to excess calories". It falls under E00-E89 Endocrine, nutritional and metabolic diseases.
Is E66.0 a billable code?
No — E66.0 is a non-billable header code. Use a more specific child code (such as E66.01) for billing.
What are the subcodes of E66.0?
E66.0 has 2 more specific child codes, including E66.01, E66.09.

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

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