The CA RS levels will include all of the preventative maintenance available for your CA LDAP as well as for all of your CA products.
It is possible to get the information about which APARs are included in each CA RS. It takes a series of steps which are documented for you here:
1- Go to http://ca.com/mainframe-cars
2- At the bottom of this page you'll see a section titled "CA RS Reports and related Tools"; the first link in this section is "CA RS for z/OS Monthly PDF Reports". Click that link. It will take you to the most recent list of all CA RS that have been produced, organized by year and month.
3- Click on the CA RS level that interests you. This will take you to a page of CA Products (listed by name and release) which have APARs included on that CA RS.
4- Click on whichever product(s) you are interested in, and that takes you to a spreadsheet including the actually APAR names.