Insurance. Can't live with it, can't live without it.
Sheesh. I remember after my auto accident in which I was rammed off the road and suffered day and night moderate to severe muscle pain in my neck, shoulders, back that I got Insurance to pay for massage and chiropractic.
The massage therapist at the office my Doc. Rx-d me to, following the insurance guidelines, told me after four sessions of 50 minutes that "I should be feeling all better now." !!!! I was like "well wouldn't that be convenient! In fact, I'm in agony!" She seemed to think my injury and body would obligingly follow her expectations and insurance company desires.
I found a real massage therapist who helped more, but was still in occasionally bad pain a year post accident, and was T-boned exactly the same way 2 days after the anniversary of the first accident in the chiropractor's parking lot.
Insurance guidelines assume the initial diagnostic code is accurate, when in fact, accurate diagnoses are those which are under vigilant scrutiny by a professional who cares and actually knows what they are doing (who is not too chicken to modify their diagnosis with new evidence).