E66.8 — Other obesity
E66.8 is a non-billable header ICD-10-CM code for other obesity. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 inherited from the categories above E66.8
Also inherited, and the opposite of Excludes1: these conditions are not part of E66.8, but a patient can have both, so you may code both.
Other codes that can never be billed with E66.8
These codes carry an Excludes1 note pointing at E66.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E66.8 alone.
- R63.5Abnormal weight gain
Risk adjustment
E66.8 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
The condition this code belongs to
Every code for the condition on one page, which one applies when, and the mistake coders make with it.
Code history
What changed, and when. Derived by diffing consecutive CMS release files — which matters when you are defending a code assigned under an earlier edition.
- deletedFY2024-FY2026
Other obesity
Code to one of these instead E66.8
2 child codes. Green means billable.
Related codes at this level
Codes that share E66. If E66.8 is not quite right, the correct code is usually one of these.
Questions about E66.8
- Is E66.8 a billable ICD-10-CM code?
- No. E66.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does E66.8 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Overweight, obesity and other hyperalimentation (E65-E68).