@rrenaut there is a section here on MFR. It stands for Myo Fascial Release therapy.
IT IS COVERED by insurance if you MEET CERTAIN QUALIFICATIONS. I had it covered when using a physical rehabilitation company through referral from my doctor and the PT company using the CORRECT diagnostic code to insurance. BUT, I found someone outside who doesn't take insurance and he was super cheap! Some will charge $280 (or more) a session and my guy charges $60 and he works on me for an hour. Its painful and I feel woosey when I get off the table but I am SO MUCH BETTER as my muscles are "unglued" and I can be more productive. I have been going twice a month for over a year now. My big muscles have unglued but after a lifetime of overworking and repetitive-use injury and degenerative conditions, I will need to continue for the rest of my life, UNLESS I want to retire from working. (which I don't!) I am an artist. You can Google search MFR on the internet or "MFR near me" if you want to contact various therapists. I tried 3 before I found my prince!
It really clarified my problems. (which I can work on, which I need therapy for, and which need surgical attention).