The R9 code comes from the North American Standard Account Ratings, a system used by the major credit bureaus for preparing credit reports. The "R" means it's a revolving credit account, such as a credit card or a line of credit. If it were an installment loan, such as a car loan or mortgage, the code would start with an "I." The numeral tells you the status of the account.
An R0 is a new account with too little activity to be evaluated; R1 is a current account -- paid on time and not past due. Ratings R2 through R5 indicate an account that's past due; the higher the number, the later it is. The R6 code is not used. An R7 code is a debt settled under a special arrangement, usually for less than the full amount owed; R8 is an account that resulted in a repossession. An account is coded R9 if the creditor decides it can't collect the debt. It may have simply written off the debt or sold it to a collection agency.
Credit Score Effect
Credit scores measure how risky it is to lend money to someone. So defaulting on an account -- going to R9 -- will undoubtedly hurt your score. Everyone's credit profile is different, but the Experian credit bureau says you can expect it to have a very negative impact on your score. Negative information stays on your credit report -- and can affect your score -- for up to seven years.