E66.1

E66.1: Drug-induced obesity

Billable / specific codeICD-10-CM

E66.1 is a billable, specific ICD-10-CM code for drug-induced obesity. It is valid for submission on a claim.

Check E66.1 with the rest of the claim: free scrubber

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Add a secondary code to capture the detail described below.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Excludes2 inherited from the categories above E66.1

Not part of this code, but both may be coded when both are present.

Written on E66: Overweight and obesity

adiposogenital dystrophy (E23.6)
lipomatosis dolorosa [Dercum] (E88.2)
lipomatosis NOS (E88.2)
Prader-Willi syndrome (Q87.11)

Other codes that can never be billed with E66.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

R63.5Abnormal weight gain

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E66.1 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A57065Billing and Coding: Outpatient Psychiatry and Psychology Services
A57179Billing and Coding: Transesophageal Echocardiogram
A57736Billing and Coding: Vitamin D Assay Testing

Alphabetic index entries that lead here

Obesity›drug-induced
Obesity›due to›drug

The condition this code belongs to

Obesity ICD-10 codes

Code history

Unchanged in every release from FY2024 to FY2027.