Pain management

I need help with coding a claim that I only received payment for one part of. A
lumbar epidural injection was done @L5-S1 under Fluoro. Then a bilat. facet blco was done @ L4-5. I put a 59 modifier on the Lumbar Epi and a 50 modifier on the Facets. I also billed for the Fluoro with a 26 modifier. I only received payment on the code 62311(lumbar epi). What am I doing wrong?

Thanks!