The state of medicine is truly amazing, many diagnoses can be very confusing though so fortunately we have the insurance companies to help us understand what we really need.
My physician had prescribed something for me. He was convinced that the problem would be chronic and require daily intervention.
The insurance company decided that it should only be a real problem and be fully covered under the plan in January, April, July, and October. They also explained that it shouldnt be a real problem requiring only partial coverage in February, May, August, or November. Though my physician had been right for some of those months, I shouldnt need it full time and therefor wouldnt be covered at all March, June, September, or December.
Now that all may be obvious to you, me, and the insurance company, the trick is just finding the physician that can convince the condition to follow the right schedule.
Oh, I am glad I read the rest of your post before responding.
In my defense I had a encounter with a poster, who, in all seriousness, was arguing for the insurance companies being the guardians of our health because they held doctors accountable.
Hope you managed to get the insurance company to see reason.