The Insurance Maze Around TMS

TMS is covered by most major US insurers for treatment-resistant depression. The word doing the work in that sentence is "treatment-resistant," and proving it is where courses of treatment stall.

What insurers typically require

Most plans require documented failure of two to four antidepressant trials at adequate dose and duration, plus a period of psychotherapy. Documentation is the operative word — trials that happened but were never written down often do not count.

Start the paperwork before the consultation

Request records from every prescriber you have seen. This takes weeks and is the single most common cause of delay.

Ask the clinic who files

Some clinics have dedicated prior-authorization staff. Others hand you a form. This is a fair question on a first phone call, and the answer predicts a lot about the months ahead.

If you are denied

Denials are frequently overturned on appeal, particularly with a letter of medical necessity from a prescribing psychiatrist. Ask whether the clinic writes them.