This excerpt taken from the CVS 8-K filed Aug 15, 2006.
. CUSIP Numbers. The Company in issuing the Debt Securities may use CUSIP and ISIN numbers (if then generally in use), and the Trustee shall use CUSIP numbers or ISIN numbers, as the case may be, in notices of redemption or exchange as a convenience to Holders and no representation shall be made as to the correctness of such numbers either as printed on the Debt Securities or as contained in any notice of redemption or exchange. The Company shall promptly notify the Trustee of any change in the CUSIP Numbers.