Order, Supreme Court, Bronx County (Luis Gonzalez, J.), entered April 21, 1994, which denied defendant physicians’ motion seeking to strike plaintiffs’ response in their verified bills of particulars to item #8 of defendants’ demand for a verified bill of particulars, and granted plaintiffs’ cross motion to the extent of striking, nunc pro tunc, item #10 from said demand, unanimously reversed, on the law, defendants’ motion granted and plaintiffs’ cross motion denied, plaintiffs to serve a response to item #8 of the demand specifying the acts and omissions upon which their claims of negligence against the physician defendants are based, and item #10 reinstated and plaintiffs directed to respond thereto, without costs.
The court also abused its discretion in granting plaintiffs’ cross motion and striking item #10 from the demand, which sought a statement of "how it will be claimed each of said injuries was caused by the alleged negligence”, finding that such improperly sought evidentiary information. Although there are occasions when a party properly may be required to set forth evidentiary matter in a bill of particulars (Twiddy v Standard Mar. Transp. Servs., 162 AD2d 264, supra), in our view, item # 10 does not seek evidentiary information but only a general explanation of causation. In any event, plaintiffs concede that they did not timely object to item # 10 by moving to vacate or modify the demand within 10 days of service, as required by CPLR 3042 (former [a]). Concur — Sullivan, J. P., Rosenberger, Kupferman, Ross and Williams, JJ.