Can you request a second opinion or is there an appeals process? It seems to me that SH would be a reason for treatment, not a reason to deny it. I wonder if you just ended up with a jerk evaluator. I have to admit that I don't really understand your medical system. But I wouldn't just take "no" for an answer. Most bureaucracies have some second layer that you can go to if the bottom rung people are idiots. I think getting your doctor to advocate for you might help.