Consumer Credit Disclosure Act of 2003 - Amends the the Truth in Lending Act to require enhanced disclosures under an open end consumer credit plan about repayment information applicable to the outstanding balance, including: (1) the required minimum monthly payment on that balance, represented as both a dollar figure and as a percentage of that balance; (2) the number of months (rounded to the nearest month) that it would take to pay the entire amount of that balance, if the consumer pays only the required minimum monthly payments and if no further advances are made; (3) the total cost to the consumer, including interest and principal payments, of paying that balance in full, if the consumer pays only the required minimum monthly payments and if no further advances are made; and (4) the monthly payment amount that would be required for the consumer to eliminate the outstanding balance in 36 months if no further advances are made.