Is E66.01 a billable code?
Yes. E66.01 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
E66.01: Morbid (severe) obesity due to excess calories
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
E66.01 is a billable ICD-10-CM diagnosis code for morbid (severe) obesity due to excess calories. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with E66.01 already added.Good Faith EstimateStart a cost estimate with E66.01 already added.CMS-1500 Claim FormFill a claim form with E66.01 in box 21.
Other codes in E66.0 Obesity due to excess calories
E66.01 questions
What does E66.01 mean?
E66.01 is the ICD-10-CM code for Morbid (severe) obesity due to excess calories. It is in chapter 4, Endocrine, nutritional and metabolic diseases (E00-E89).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.