If I may rephrase the OP question I would do so as follows.
There are many worthy organizations out there vying for our tzedaka dollars. Be it to support almonos, yesomim, talmidei chachamim, yeshivas, mikvahs, fertility treatments, pidyon shvuyim, sick people etc… The list goes on and on.
One should ask his LOR how to best distribute his tzedaka money.
However, some of the causes mentioned above are mentioned in Shulchan Aruch while others are not.
So the question is, can one satisfy his minimum chiyuv of maaser by giving tzedaka to a cause not mentioned in S”A, such as fertility treatments?