NDC Code Sets
National Drug Codes (NDC), as updated and distributed by HHS, in collaboration with drug manufacturers, for the following:
NDC: Official versions of the files are available on the Internet at http://www.fda.gov/cder/ndc/index.htm. NDC codes are also published in the Physicians’ Desk Reference under the individual drug product listings and "How supplied." The supplements are available quarterly on diskette from the National Technical Information Service at 703-487-6430.