Medical emergencies require cash, and it's not just a situation that happens exclusively in private clinics; it also occurs in third-world hospitals, in countries like Venezuela for instance, where patients' families have to cover all expenses for supplies, medications, and even orthopedic or osteosynthesis materials, which are really pricey.
It's funny that even though cryptocurrencies are a super direct way to transact, crowdfunding campaigns for donations don't have these methods integrated into their platforms by default.