Hi!
Unfortunately, you won't be able to deduct any moving expenses due to moving because of medical reasons. I have included a link for you that explains the moving expenses deduction and why you can't deduct those expenses.
Thank you,
Lisa , EA
Publication 502 details what are deductible as medical expenses. https://www.irs.gov/pub/irs-pdf/p502.pdf
Moving expenses are not listed in this publication as a medical expense.
I also did a brief search and was unable to find any tax court cases or PLRs that suggest the IRS has ever allowed a medical deduction for moving expenses. So I think they would be nondeductible per the general exclusion of moving expenses for anyone besides active duty military.
Of note, a medical reason to move could be a reason to qualify for a partial exclusion of capital gain on a home you haven't lived in for two years. See Publication 523 on partial exclusion. But that is a different question than yours.