Occupational Therapy for Tendonitis

My husband just started occupational therapy on his elbow/wrist today.  They are going to do ultrasound (or ultrasonic?) and weight training to see if that helps the tendonitis or whatever it is that has caused him so much pain.  I'm wondering with all that ultrasound, if we should've asked for an insurance quote first, but then it has to be done so it's really not going to matter how much insurance doesn't cover at this point. He can't keep going on in pain.