I'm pretty sure a single level Charite was approved in 2004. I don't know why your insurance says it's experimental. They're using their own arbitrary definition of experimental. Fusion is not a bad choice. I have a L5-S1 Charite. It got rid of my disc pain but caused facet pain that was just as bad as the disc pain.
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Jim
2003 L5S1 Charite
1981 L5S1 Discectomy
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