ICD-10-CM › E00-E89 › E65-E68 › E66.81 Obesity class › E66.813
E66.813
Obesity, class 3
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2025 to now.
- FY2025 Added to the code set Obesity, class 3
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from E66 Overweight and obesity
Excludes2 - not included here
- adiposogenital dystrophy (E23.6)
- lipomatosis dolorosa [Dercum] (E88.2)
- lipomatosis NOS (E88.2)
- Prader-Willi syndrome (Q87.11)
Use additional code
- code to identify body mass index (BMI), if known, for adults (Z68.1-Z68.45) or pediatrics (Z68.5-)
Code first
- obesity complicating pregnancy, childbirth and the puerperium, if applicable (O99.21-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Fatness
- Adiposis
- Adiposity
- Corpulence
- Fat > excessive
- Excess, excessive, excessively > fat
- Obesity > class > 3
Codes in the same group
| Code | Description | Status |
|---|---|---|
| E66.811 | Obesity, class 1 | Valid |
| E66.812 | Obesity, class 2 | Valid |