But none relating to payment or ability to pay. In the UK, medications are dispensed without checking whether a person is eligible for free prescriptions. Anyone can collect a prescription medication without paying by claiming an exemption (e.g. being on low income, pregnant, etc.) without proof. The pharmacist can also waive the £9 fee for a prescription. There's never a situation where not being able to figure out the paperwork prevents medicine being available.
The prescription system itself could be compromised, in which case everyone in society would face the same issue (which would be mediated by the fact that paper prescriptions are still produced, and a pharmacist can telephone a prescribing surgery). Only a supply chain attack would really cripple the system.