Despite the efforts of Hollywood to portray their superstars as having Wilt Chamberlain levels of sexual partners, you might be surprised about the truth. According to the National Center for Health Statistics, women between the ages of 20 and 59 have about four sexual partners during their life, while men have about seven. Sex related codes in medical billing and coding abound – from those related to pregnancy to those dealing with STDs. During their career, medical billers and coders can expect to encounter both instances of these codes and their associated fees when billing insurance companies. But what about the act of sex itself? What are the interesting facts that you might not know about one of our basic human drives and needs?