Body mass index [BMI] 40.0-44.9, adult

This diagnosis code indicates a Body Mass Index (BMI) in the range of 40.0 to 44.9 for an adult patient. This BMI range is classified as Class III obesity, which is the most severe category of obesity. It signifies a significant excess of body fat that poses substantial health risks.

This code should be used when an adult patient's BMI has been calculated and falls within the 40.0-44.9 range. It is often reported as a secondary diagnosis to provide context for other obesity-related conditions or when obesity is being managed. This code is appropriate for both initial encounters and follow-up visits where the BMI remains in this range.

• Always ensure the patient is an adult (18 years or older) when using this code.
• Report this code as a secondary diagnosis unless the reason for the encounter is specifically for obesity management or counseling.
• Document the actual BMI value in the patient's medical record to support the code assignment.