E66.813
✓ Billable
Obesity, class 3
ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases
Code
E66.813
System
ICD-10-CM
Billable
Yes — valid for submission
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 E66.813?
ICD-10-CM code E66.813 represents Obesity, class 3. It is a billable diagnosis code in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is E66.813 billable?
Yes. E66.813 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is E66.813 in?
E66.813 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.
Related codes in the E66 category
E66
Overweight and obesity
Non-billable
E66.0
Obesity due to excess calories
Non-billable
E66.1
Drug-induced obesity
Billable
E66.2
Morbid (severe) obesity with alveolar hypoventilation
Billable
E66.3
Overweight
Billable
E66.8
Other obesity
Non-billable
E66.9
Obesity, unspecified
Billable
E66.01
Morbid (severe) obesity due to excess calories
Billable
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