OK, I understand now. It is not that iron infusions are not covered, but that you have a high deductible. We also have a high deductible HSA plan, so everything is 100% out of pocket until the deductible is satisfied. Easy to do when the pharmacy bill comes to about $3K per month. When we retire we will have to pay the entire premium in addition, so I understand the challenges. You either pay in premiums or in copays/deductibles. We live in a high premium cost county too. But, it seems that the rising costs are lower percentages than they used to be.
I think that Dan has the right idea though, to get your underlying inflammation under control, rather than chasing the losing battle of anemia. But, it would not save you money. Humira runs about $2500-3000 per month, depending on how often you need to take it, so you'd still be spending the deductible.