health savings account

[Ryan Fox]

The below article talks about the advantages of a health savings account.  One of the things they say is you can make contributions to the HSA and invest those amounts, but pay your medical bills with other funds.  Then, when you later have other expenses, such as college tuition, travel, ect., you can withdraw funds from the HSA as reimbursement for your past medical bills.  

Is this true?  I read IRS Pub. 969 and couldn't find it addressed that specifically.  Thanks in advance!

https://www.cnbc.com/2021/10/1...