Dolphin bite? There's a medical code for that. Simone Di Tonno - Annachiara Fig/iStockphoto.com hide caption itoggle caption Simone Di Tonno - Annachiara Fig/iStockphoto.com Shots - Health News Doctors Cheer As Feds Delay New Disease Codes, Again February 16, 2012 Thousands of detailed codes form the backbone of a billing system that the federal government has been seeking to modernize for a while. The U.S., unlike other countries, is still using old codes. After doctors objected, the government agreed to delay implementation indefinitely.