Even if it turns out not to be broken ribs, seeing a *qualified *exotics vet with any concerns that can't be answered by experienced keepers can be valuable (*this part is important). Concerns that crop up following a fall seem even more important to get a vet's input on.
I respectfully am skeptical about the value (both absolute value, and cost to benefit ratio) of routine wellness checks, since the majority of issues that pop up are husbandry related, and experienced serious keepers are going to be much better at diagnosing these sorts of things unless the vet has extensive experience with keeping the actual species at hand. There are basic care recommendations that make a lot more sense in the abstract than they do in practice -- UVB is probably the poster child for this -- and keepers are well placed to point out practical issues that come from experience.
Anyway, the most notable mystery ailment I saw a vet for was a rainbow boa that developed a bulge on his side. After X rays and ultrasound imaging, it was determined that when he gets stressed his liver protrudes between his abdominal muscles, a bit like a hernia but transient. It went away when he was anesthetized for the imaging -- that's how it was diagnosed. Turns out to be not worrysome, but really interesting, and now I know that I need to not stress him out (overhandling did it). Just knowing all this is worth the time and money at the vet, worth it to me anyway.