E66 Overweight and obesity
ICD-10-CM category E66 sits in Chapter 4 (Endocrine, nutritional and metabolic diseases, E00-E89). It contains 10 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
E66.0 Obesity due to excess caloriesE66.8 Other obesityE66.81 Obesity class
Billable codes in E66
| Code | Description |
|---|---|
E66.01 | Morbid (severe) obesity due to excess calories |
E66.09 | Other obesity due to excess calories |
E66.1 | Drug-induced obesity |
E66.2 | Morbid (severe) obesity with alveolar hypoventilation |
E66.3 | Overweight |
E66.811 | Obesity, class 1 |
E66.812 | Obesity, class 2 |
E66.813 | Obesity, class 3 |
E66.89 | Other obesity not elsewhere classified |
E66.9 | Obesity, unspecified |
Search within ICD-10-CM for E66 and related codes
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