MCMCB Pro
E66.812

E66.812Obesity, class 2

Billable / specific codeICD-10-CM

E66.812 is a billable, specific ICD-10-CM code for obesity, class 2. It is valid for submission on a claim.

Risk adjustment

E66.812 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.

Medicare coverage

E66.812 is named in 14 Medicare coverage policies 14 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A54923Billing and Coding: Bariatric Surgery for Treatment of Co-Morbidities Conditions Related to Morbid Obesity
  • A56852Billing and Coding: Laparoscopic Sleeve Gastrectomy for Severe Obesity
  • A57065Billing and Coding: Outpatient Psychiatry and Psychology Services
  • A57145Billing and Coding: Surgical Management of Morbid Obesity

How E66.812 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E66.812.

  • Obesityclass2

Related codes at this level

Codes that share E66.81. If E66.812 is not quite right, the correct code is usually one of these.

Questions about E66.812

Is E66.812 a billable ICD-10-CM code?
Yes. E66.812 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E66.812 sit in the tabular list?
Endocrine, nutritional and metabolic diseases (E00-E89), in the block Overweight, obesity and other hyperalimentation (E65-E68).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.