You should check IRS Publications 502 for eligible items. Acupuncture, chiropractor services and more are among the non-traditional services you can pay for with your HSA. irs.gov/publications/p502/ar02.html (see page 5). Ultimately, the HSA funds and how they are used are your responsibility and you should keep all receipts for purchases using your HSA funds. This will help you in case of an IRS audit.