http://www.codexalimentarius.net/web/faq_work.jsp#W4
(Warning: This is the only official website of the Codex Alimentarius Commission. Unofficial websites using similar domain names (URLs) exist.)
Printre altele: "Codex has developed standards and a code of practice to effectively apply the irradiation technology to improve food safety, together with guidance on the labelling of irradiated foods. However, it is left to governments to determine their own approach to the use of food irradiation."