This online reference for cfr title 21 is updated once a year for the most up to date version of cfr title 21 go to the electronic code of federal regulations ecfr this database includes a codification of the general and permanent rules published in the federal register by the executive departments and agencies of the federal government. Tips for searching the code of federal regulations title 21 food and drugs. The information on this page is current as of april 1 2018 for the most up to date version of cfr title 21 go to the electronic code of federal regulations ecfr. Title 21 food and drugs title 21 food and drugs electronic code of federal regulations e cfr. Code of federal regulations title 36 parks forests and publicproperty pt 200 299 revised as of july 1 2018 microfiche t 36 pts 200 299 code of federal regulations microfiche 2018