I have severe arthritis and purchased a walk-in tub so I can bathe and shower safely. It was costly. Is this a deductible medical expense?

The following items are all included in IRS Publication 502. Based on these, I would think the expense would be deductible.

• Installing railings, support bars, or other modifications to bathrooms.

• Mattresses and boards bought specifically to alleviate an arthritic condition
• Whirlpool baths prescribed by a doctor

https://www.irs.gov/pub/irs-pdf/p502.pdf

So if such a whirlpool bath was prescribed by a doctor, it can be considered as a deductible expense, am I right?