North Carolina  |  Workers Comp

My husband was stung by yellow jackets at work. He had an allergic reaction and had to rushed to the hospital by an ambulance. Later, the company filed a report and recorded the conversation and said that they would pay. Now the workers compensation insurance has denied the claim and said that workers compensation doesnt pay for bee stings unless he is a bee keeper. They are refusing to pay the medical bills. Is that true? Can he be denied and is there anything we can do about this?