Compression wraps work better than compression socks. I get them from Comfort Care. I have had it for a few years and have found great necessary treatments.
Unfortunately doctors know very little and just rely on the physical therapists some of which are good.
In order to slow down the lymphedema and swelling, you need compression velcro wraps not compression socks. For these you need a prescription from your doctor. Most doctors will send you to a physical therapist as you need to be measured and your physical therapist has to send clinical notes via fax to Comfort Care in order for Comfort Care to send a form to your doctor who will then send a prescription to Comfort Care. They are the best company to deal with as they send the requests directly to your insurance company!! If you have on both legs make sure they note that.
In addition compression pump helps. I have full leg and trunk as my lymphedema is in feet, ankles, legs, thighs, hips, and rear and midriff.
The best company is Tactile Medical . They will deal with your insurance company as well.