E66.81
⚠ Non-billable (Header)Obesity class
Endocrine, nutritional and metabolic diseases (E00-E89)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for E66.81
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CodeE66.81
BillableNo — Header code
ParentE66.8
CategoryEndocrine, nutritional and metabolic diseases (E00-E89)
Excludes10 rule(s)
Excludes20 note(s)
Child codes3
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)