ICD-10 Coding for Class 1 Obesity(E66.01, E66.01U, E66.8)

Learn about the ICD-10 code E66.811 for Class 1 Obesity, including documentation requirements, coding pitfalls, and billing considerations.

Also known as:
Mild ObesityObesity Class I
Related ICD-10 Code Ranges

Complete code families applicable to Class 1 Obesity

Key Information

Essential facts and insights aboutClass 1 Obesity

Differential Codes

Alternative codes to consider when ruling out similar conditions

Morbid (severe) obesityE66.01

Use for BMI ≥40 or BMI ≥35 with comorbidities.

Documentation & Coding Risks

Avoid these common issues when documenting Class 1 Obesity.

Documenting BMI without linking to obesity diagnosis

Impact

Clinical: May lead to under-treatment of obesity., Regulatory: Non-compliance with coding guidelines., Financial: Potential loss of reimbursement.

Mitigation

Educate providers on linking BMI to diagnosis, Use templates that prompt for class documentation

Using E66.9 for unspecified obesity when BMI is documented

Impact

Reimbursement: May affect risk adjustment scores and reimbursement rates., Compliance: Could trigger audits for lack of specificity., Data Quality: Leads to inaccurate data on obesity prevalence.

Mitigation

Query provider for specific class or use E66.811 if Class 1 is confirmed.

Specificity of Obesity Coding

Impact

Using unspecified codes when specific class codes are available.

Mitigation

Educate providers on documenting obesity class and BMI.

Frequently Asked Questions