E66.01
BillableMorbid (severe) obesity due to excess calories
E66.01 is the ICD-10-CM code for Morbid (severe) obesity due to excess calories. It is a billable, specific code valid for reimbursement.
E00-E89 Endocrine, nutritional and metabolic diseases
Excludes1 — not coded here
- •morbid (severe) obesity with alveolar hypoventilation (E66.2)
Frequently asked questions
- What is ICD-10 code E66.01?
- E66.01 is the ICD-10-CM code for "Morbid (severe) obesity due to excess calories". It falls under E00-E89 Endocrine, nutritional and metabolic diseases.
- Is E66.01 a billable code?
- Yes — E66.01 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from E66.01?
- Excludes1 (not coded here): morbid (severe) obesity with alveolar hypoventilation (E66.2).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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