To keep the cost of healthcare under control set up an option to add a parent/parents to their child/children's SS medicare deductions. If your parents had three children spread the cost between them. We already pay some into the system through payroll deductions.That will increase at a fair price based on each child's current pay.
I do not know of anyone who is not be willing to help out their parents. We can share in their care and medical expense and this will keep the expenses from exploding in the next two decades and keep the program solvent