Bunionectomies

“I have recently done bunionectomies on two separate patients with Anthem and received denials. One was a combination of an Austin procedure and an Akin procedure. I billed CPT 28299 -RT. On another patient, I did an Austin procedure and I billed CPT 28296 -RT. Both claims were denied for “inappropriate use of modifier.” I have called the customer service twice and even sent a corrected claim and removed the modifier but claim was still denied. Has something changed with Anthem that I don’t know about?”