What Is Lasso Healthcare MSA? A High-Deductible Health Plan Combined With A Special, Medical Savings Account. If You've Used A Health Savings Account In The Past, You Are Familiar With How This Works. Lasso Makes An Initial Deposit Of Monies Into Your Account. The Monies Are Yours To Spend, Move To Your Own Bank And/Or Invest. Medicare Advantage plan with a Medical Savings Account that has ZERO Premium, NO Networks, plus an Annual Deposit. It has the availability of being able to accumulate money in your savings account tax free to utilize paying medical bills that are covered by Medicare Part A and Medicare Part B. Whatever is leftover at the end of the year rolls over to next year because it's your money, all tax free.