I have been doing this as long as you, and I have never heard of such a thing. In fact, with regular Medicare DME, we have had patients get more than one L4360 in a year, due to various reasons, with no problem having them paid. BUT...we are talking about Humana which is bad, and Humana Medicare, which is worse than bad. I pulled my office out of their Medicare plans because they made their own rules, and didn't follow Medicare's rules, and I got sick of it. You could try to go through their appeals process, and keep escalating it if they continue to deny, but I don't know how much success you will have. If they have this spelled out in either the provider's contract, or the patient's benefits manual, you may be SOL.