N.Y. C.P.L.R. 3041

§ 3041. Bill of particulars in any case. Any party may require any\nother party to give a bill of particulars of such party's claim, or a\ncopy of the items of the account alleged in a pleading. As used\nelsewhere in this article, the term "bill of particulars" shall include\n"copy of the items of an account."\n