BMI is the dumbest measure, ever.
I have about 9% body fat (you can see 8 abs). I have a 34 inch waist.
I also deadlift 495 for 3, bench 405 for 6, squat (ass to ground) 520 for 5, do 15 pullups no stop, and easily can run a mile in under 7 minutes.
I’m morbidly obese per BMI.
Congratulations! Obamacare will require that your BMI be reported to HHS every year to track you, and most likely you will be penalized for your fantastic health. Your doctor will be required track your success in reducing your BMI to their satisfaction, and report to HHS for further instructions.