I would use CPT code 44380, Ileoscopy, through stoma; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure). CPT 52000\52005 are inaccurate because they reference urethroscopy and cystoscopy, both of which are not performed. 74425 would still be the correct code.
I don't understand the choice of 52005 over 52000 given the choice of only those two options, since 52005 includes urethral dilation. When performing a loop-o-gram the urethra would not be dilated because it is not the access route. Is your physician dilating the ileal tract before entering the ineum with the scope? Either way, 44380 would be the correct code.