The term "plastic surgery" originates from the Greek word "plastikos," which means to mold or shape. The field of Plastic Surgery can be broken down into two main categories – reconstructive procedures and cosmetic procedures. Reconstructive surgery is performed to restore function and normal appearance, and correct deformities created by birth defects, trauma or medical conditions including cancer. Examples include cleft lip and palate repair, breast reconstruction following a lumpectomy or mastectomy for breast cancer, and reconstructive surgery after burn injuries. The lines between reconstructive and cosmetic surgery are further blurred when it comes to insurance coverage. Certain conditions can be deemed either "reconstructive" or "cosmetic" depending on the patient's specific situation. Typically, reconstructive surgery is considered medically necessary and many insurance plans may cover the procedure.