urethral dilation

Provider performed urethral dilation on a FEMALE patient using a MALE dilator on two separate days. Provider says to use 53600 - "dilation of urethral stricture by passage of sound or urethral dilator, male; initial" for both days. This is how the original claim was filed, and subsequently denied for "code is inconsistent with patient's gender." I believe it should have gone out as 53660 for the first day and 53661 for the subsequent visit. (unless 53661 means subsequent on the same date of service). If so, should have been 53660 "female" on both dates.

Any enlightenment will be appreciated. Thanks!