GXMO stands for General X-ray Machine Operator. It is illegal in the state of Ohio to take x-rays of humans without a license. The Ohio Department of Health grants a GXMO license to individuals who complete appropriate training authorizing them to take perform certain x-ray exams under certain conditions. A GXMO license is granted to a trained person and allows them to perform x-ray exams of a certain part of the body, such as chest x-rays and abdomen x-rays. Typically, the ability to perform certain radiographic examinations is just one part of the person’s job and is part of a larger skill set that might include clerical, medical billing, or medical assistant skills.