A radiopaque marker that includes a body being adapted to be disposed around a portion of an implantable medical lead and formed from a polymer mixed with a radiopacifier. The polymer is designed to form a symbol that identifies the implantable medical lead as being designed for safe application of a medical procedure. In some instances, the body of the radiopaque marker includes portions of varying thicknesses, the thick portions of the body being designed to form the symbol that identifies the implantable medical lead as being designed for safe application of a medical procedure such that the thick portions of the body appear more radiologically dense during an imaging procedure. In other instances, the body of the radiopaque marker may have a relatively uniform thickness and is shaped into the symbol that identifies the implantable medical lead as being designed for safe application of a medical procedure.