ICD-10 Codes for Obesity
The following table provides a list of ICD-10 diagnosis codes you may need when treating patients with obesity. These codes are not intended to be promotional nor to suggest a use that is inconsistent with FDA-approved use. The list is not exhaustive; additional codes may apply. ICD-10 codes use 3 to 7 alpha and numeric characters. A code is invalid if it does not use the full number of characters required, including the seventh character (if applicable).
Obesity ICD-10 Codes for Adult Patients
ICD-10 Indication
ICD-10 Code
Obesity due to excess calories
E66.0
Morbid (severe) obesity due to excess calories
E66.01
Other obesity due to excess calories
E66.09
Drug-induced obesity
E66.1
Morbid (severe) obesity with alveolar hypoventilation
E66.2
Overweight
E66.3
Other obesity
E66.8
Obesity, unspecified
E66.9
Body mass index [BMI] 40.0-44.9, adult
Z68.41
Body mass index [BMI] 30.0-30.9, adult
Z68.30
Body mass index [BMI] 27.0-27.9, adult
Z68.27
Body mass index [BMI] 28.0-28.9, adult
Z68.28
Body mass index [BMI] 29.0-29.9, adult
Z68.29
Body mass index [BMI] 31.0-31.9, adult
Z68.31
Body mass index [BMI] 26.0-26.9, adult
Z68.26
Body mass index [BMI] 25.0-25.9, adult
Z68.25
Body mass index [BMI] 32.0-32.9, adult
Z68.32
Body mass index [BMI] 45.0-49.9, adult
Z68.42
Body mass index [BMI] 33.0-33.9, adult
Z68.33
Body mass index [BMI] 34.0-34.9, adult
Z68.34
Body mass index [BMI] 35.0-35.9, adult
Z68.35
Body mass index [BMI] 36.0-36.9, adult
Z68.36
Body mass index [BMI] 50.0-59.9, adult
Z68.43
Bariatric surgery status
Z98.84
Body mass index [BMI] 37.0-37.9, adult
Z68.37
Body mass index [BMI] 38.0-38.9, adult
Z68.38
Body mass index [BMI] 39.0-39.9, adult
Z68.39
Obesity ICD-10 Codes for Pediatric Patients
ICD-10 Indication
ICD-10 Code
Body mass index [BMI] pediatric, greater than or equal to 95th percentile for age
Z68.54
These codes were collected in February, 2025; they may change.
This information is not a promise of coverage or payment, nor is it intended to give reimbursement advice or increase reimbursement by any payer. Legal requirements and plan information can be updated frequently. Contact the plan for more information about current coverage, reimbursement policies, restrictions, or requirements that may apply.
ICD-10, the International Classification of Diseases, acknowledges obesity as a chronic disease. Within its coding system, there exists a comprehensive array dedicated to Body Mass Index (BMI) and obesity, enabling healthcare professionals to accurately document and diagnose patients with varying degrees of weight-related concerns.
In the realm of pediatric care, ICD-10 provides codes specifically tailored to address obesity in younger populations. This inclusive coding system considers the unique factors influencing obesity in children and adolescents. The ICD-10 coding system also encompasses codes for unspecified obesity, recognizing instances in which a precise etiology or cause for obesity may not be immediately evident or documented.
Furthermore, the classification system accommodates codes specifically related to obesity caused by excess calorie intake. This coding distinction aids in pinpointing cases where excessive caloric consumption significantly contributes to a patient’s obesity, allowing for tailored treatment and intervention strategies.
Accurate and detailed recording of these diagnoses within patients' records is paramount. Not only does it support comprehensive patient care by facilitating a deeper understanding of the individual's health needs, but it also plays a crucial role in securing appropriate treatment coverage where available.
For more information about ICD-10, please visit the CMS website.