What is Electromagnetic Therapy?
As you might guess, electromagnetic therapy uses magnetics to treat certain conditions. Electromagnetic pulses are not continuous, are directed to specific areas, and controlled for strength and frequency.
Another study (https://pubmed.ncbi.nlm.nih.gov/32606905/) showed some positive results for musculoskeletal pain.
If you research PEMF machines, you can get an idea of the variety of equipment that is designed to deliver electromagnetic pulses, as well as the cost of the devices.
While this treatment may help with pain relief, there is as yet no substantive evidence that it treats/cures any physical condition. Users claim that using a PEMF device, as opposed to a TENS unit, will speed up the healing process and reduce swelling at injury sites. There have been some animal studies to test that claim: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5764361/
Another claim made by manufacturers and users of PEMF devices is that it increases oxygen to cells and can stimulate removal of toxins, cautioning that you may then experience mild detoxification side effects.
For some information from a wellness site that sells the units: https://www.oskawellness.com/blogs/blog/10-facts-about-pemf-machines-and-what-they-can-do-for-you
There are home units but you may need professional help in determining whether or not your condition will respond to the treatment and how to set the controls on the unit for best effect.
When you find a claim for the efficacy of a treatment, please try to find some scientific information to back up the claim. That the FTC warns someone about making unsubstantiated claims does not necessarily mean that the claim is untrue, but it does mean that the claimant has not bothered to wait for approval or scientific evidence to make such a claim. There may be no evidence at all to back up the claim, of course. One company made a claim that PEMF would prevent COVID-19 and they were sent a letter from the FTC to cease and desist.
Insurance may or may not cover electromagnetic therapy for the treatment of wounds. It is unlikely it would be covered for treating other conditions. However, the field of medicine is fluid and insurance coverage is not static.