Obesity ICD-10 Codes
All ICD-10-CM diagnosis codes for obesity
Obesity is coded under E66 in ICD-10-CM. E66.01 is used for morbid (severe) obesity due to excess calories, while E66.09 covers other obesity due to excess calories. E66.1 is drug-induced obesity. BMI codes (Z68) should be reported as additional codes to specify the degree of obesity.
Total Codes
51
Billable Codes
42
Categories
2
Primary Code Categories
These are the top-level ICD-10-CM categories for obesity. Click any code to see all specific subcodes.
Billable/Specific Codes (42)
These are the specific, billable ICD-10-CM codes that can be used on medical claims for obesity.
E66.01Morbid (severe) obesity due to excess calories
E66.09Other obesity due to excess calories
E66.1Drug-induced obesity
E66.2Morbid (severe) obesity with alveolar hypoventilation
E66.3Overweight
E66.811Obesity, class 1
E66.812Obesity, class 2
E66.813Obesity, class 3
E66.89Other obesity not elsewhere classified
E66.9Obesity, unspecified
Z68.1Body mass index [BMI] 19.9 or less, adult
Z68.20Body mass index [BMI] 20.0-20.9, adult
Z68.21Body mass index [BMI] 21.0-21.9, adult
Z68.22Body mass index [BMI] 22.0-22.9, adult
Z68.23Body mass index [BMI] 23.0-23.9, adult
Z68.24Body mass index [BMI] 24.0-24.9, adult
Z68.25Body mass index [BMI] 25.0-25.9, adult
Z68.26Body mass index [BMI] 26.0-26.9, adult
Z68.27Body mass index [BMI] 27.0-27.9, adult
Z68.28Body mass index [BMI] 28.0-28.9, adult
Z68.29Body mass index [BMI] 29.0-29.9, adult
Z68.30Body mass index [BMI] 30.0-30.9, adult
Z68.31Body mass index [BMI] 31.0-31.9, adult
Z68.32Body mass index [BMI] 32.0-32.9, adult
Z68.33Body mass index [BMI] 33.0-33.9, adult
Z68.34Body mass index [BMI] 34.0-34.9, adult
Z68.35Body mass index [BMI] 35.0-35.9, adult
Z68.36Body mass index [BMI] 36.0-36.9, adult
Z68.37Body mass index [BMI] 37.0-37.9, adult
Z68.38Body mass index [BMI] 38.0-38.9, adult
Z68.39Body mass index [BMI] 39.0-39.9, adult
Z68.41Body mass index [BMI] 40.0-44.9, adult
Z68.42Body mass index [BMI] 45.0-49.9, adult
Z68.43Body mass index [BMI] 50.0-59.9, adult
Z68.44Body mass index [BMI] 60.0-69.9, adult
Z68.45Body mass index [BMI] 70 or greater, adult
Z68.51Body mass index pediatric, less than 5th percentile for age
Z68.52Body mass index pediatric, 5th percentile to < 85% for age
Z68.53Body mass index pediatric, 85% to less than 95% for age
Z68.54Body mass index ped, 95% for age to < 120% of 95% for age
Z68.55Body mass index ped, 120% 95% for age to < 140% 95% for age
Z68.56Body mass index ped, > or equal to 140% of the 95% for age
Frequently Asked Questions
What is the ICD-10 code for obesity?
The primary ICD-10-CM codes for obesity are E66.01, E66.09, E66.9. There are 51 total codes related to obesity, of which 42 are billable/specific codes that can be used on medical claims.
How many ICD-10 codes are there for obesity?
There are 51 ICD-10-CM codes related to obesity. Of these, 42 are billable/specific codes. The remaining codes are non-billable header categories used to organize the specific codes underneath them.
Which obesity ICD-10 code should I use for billing?
The most commonly used billable codes for obesity include: E66.01 (Morbid (severe) obesity due to excess calories); E66.09 (Other obesity due to excess calories); E66.1 (Drug-induced obesity). The correct code depends on the specific clinical presentation. Always code to the highest level of specificity supported by the clinical documentation.
Is E66.01 a billable ICD-10 code?
Yes, E66.01 (Morbid (severe) obesity due to excess calories) is a billable/specific ICD-10-CM code that can be used on medical claims.
What are other names for obesity in ICD-10?
Obesity may also be referred to as: obesity, obese, morbid obesity, overweight, BMI. The same ICD-10-CM codes apply regardless of which term is used in the clinical documentation.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.