E66.813 — Obesity, class 3
E66.813 is a billable, specific ICD-10-CM code for obesity, class 3. It is valid for submission on a claim.
Risk adjustment
E66.813 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 48 Morbid Obesity0.186 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
E66.813 is named in 15 Medicare coverage policies — 15 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 E66.813 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 E66.813.
- Obesity›class›3
Related codes at this level
Codes that share E66.81. If E66.813 is not quite right, the correct code is usually one of these.
Questions about E66.813
- Is E66.813 a billable ICD-10-CM code?
- Yes. E66.813 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E66.813 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Overweight, obesity and other hyperalimentation (E65-E68).