Can I Use my HSA - health care savings account funds outside USA in India?

  1. I am working in USA on H1B visa.
  2. I have HSA - Health Care savings account with good amount of money collected for medical expenses.

Can I use this money to get a surgery done in India and still use my HSA funds?

YES. You can use your HSA money outside USA for medical purpose.
The medical expenses and prescription medicines that you use should be allowed under IRS rule to be TAX exempt.