Will most health insurances require that an aortic aneurysm 4.5 cm before paying for surgery? I am 37 year-old male who has been recently been diagnosed with an aortic aneurysm in the area of 4cm. I will not know the exact size until 08/20. I am not going to be available for surgery for two years if I do not immediately go under the knife. Will most insurance companies pay for the surgery if the diameter is less than 4.5 cm? I currently have Humana and wonder about their coverage?