You're confusing various parts of the federal-run disability programs with the eligibility for the federal-run SSI and the state-run medicaid program. There'a no wealth cap for the federal disability program SSDI, just a certain number of work credits (years worked basically) and a recognized disability, with a limit on how much you can earn while collecting. The other two have various limits, and can seize assets. There are other state-run programs as well that have income limits.