pcsv provides parser of csv based on rfc4180 http://www.rfc-editor.org/rfc/rfc4180.txt
Put this file into load-path'ed directory, and byte compile it if desired. And put the following expression into your ~/.emacs.
(require 'pcsv)
Use pcsv-parse-buffer, pcsv-parse-file, pcsv-parse-region functions
to parse csv.
To handle huge csv file, use the lazy parser pcsv-file-parser.
To handle csv buffer like cursor, use the pcsv-parser.