The administrative side in healthcare is where medical coding comes in to play. In order to bill for an injury or a procedure, the coding has to be correct or the insurance company could reject it and no payment will be issued. Coding is used in the medical field in a variety of ways. Those studying medicine need to learn the diagnosis of an injury or sickness so the medical coding can be put in a system so the doctor or facility can be paid. Coding is more behind the scenes and is an integral part of the medical field.