We had a pt that came in for removal of 2 pilar cysts on the scalp. One was located on the mid-frontal scalp & the other on the right central parietal scalp. We billed BCBSTX 11421-59, 11422, 12031 & 13120. Ins denied the 11421 for incorrect modifier. Any idea why they would deny that code with the 59 mod? TIA!!