Yes. Hematuria means blood in the urine, it could be microscopic not visible by naked eyes or macroscopic visible, nephrologist and urologist could investigate the causes.
Usually no. Causes of hematuria, blood in urine, include bleed in the urinary tract from a tumor, stone, or other reasons of injury or inflammation. However, causes from diseases of the kidney filtering units, glomerular disease, are not to be ignored. Blood disease e.g. Unusual thinnes of blood, called coagulopathy, may precipitate hematuria.