HSA and Medicare premiums have virtually nothing to do with each other, so much so that I am not sure what your question is.
Contributions to an HSA are excluded from income. If your contributions are through your employer then they are removed from Wages in boxes 1, 3, and 5 (so are not taxable).
If the contributions are made directly to the HSA, then they are deductible on Schedule 1 (1040).
So in neither case do contributions to an HSA go on Schedule A. And items paid for by an HSA do not belong on Schedule A, either.
@Carrabba17-
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