Is Qualified Medicare Beneficiary application the same as applying for Medicaid?

I know this may sound simple and hopefully it is. I was asking the state and county department of mental health/social services on how to apply for Medicaid for my 84 year old mother in law. I was told by the state that I should fill out the Qualified Medicare Beneficiary application and send to the county social services department. It had something to do with her age being 84 and she is disabled.
I am not sure if I am doing the correct application; I want to apply for Medicaid, but don't want to create any problems for her if this is not the correct path to take for Medicaid application. Thank you.