Maybe, maybe not. Usually, advocates of universal (or more commonly, "unconditional") basic income favor using it to, ultimately, replace existing means-tested aid programs. Whether they would also have supplemental, non-means-tested, programs based on special needs (e.g., medical conditions) or whether they would address those some other way (or not see them as public responsibilities) varies considerably between which source of need you are discussing, and which UBI advocate you are discussing it with.