Is E66.0 a billable ICD-10-CM code?

No. E66.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E66.0 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Overweight, obesity and other hyperalimentation (E65-E68).

E66.0

E66.0 — Obesity due to excess calories

Non-billable headerICD-10-CM

E66.0 is a non-billable header ICD-10-CM code for obesity due to excess calories. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

E66.0 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.

Code to one of these instead E66.0

2 child codes. Green means billable.

E66.01Morbid (severe) obesity due to excess calories
E66.09Other obesity due to excess calories

Related codes at this level

Codes that share E66. If E66.0 is not quite right, the correct code is usually one of these.

E66.1Drug-induced obesity
E66.2Morbid (severe) obesity with alveolar hypoventilation
E66.3Overweight
E66.8Other obesity
E66.9Obesity, unspecified

Questions about E66.0

Is E66.0 a billable ICD-10-CM code?: No. E66.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E66.0 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Overweight, obesity and other hyperalimentation (E65-E68).