Measure Description: Percentage of patients aged 18 years and older with a BMI documented during the current encounter or within the previous twelve months AND who had a follow-up plan documented if most recent BMI was outside of normal parameters.

Our Query - If we are getting high BMI documented, and the case has a followup like weight management documented, would we still need a reason for the patient being overweight/obese  to be documented, or we can assume that patient would be overweight/ obese, which is why the follow up is given for weight management

Please find an example for this:

BMI documented >25 Kg

Follow up - Weight Management and Nutritional Counseling

Similar for this would go for underweight and low BMI condition as well. 

Hope this clarifies. Please let us know if you need any more information.