Authorization denial from BCBS for secondary claim

BCBS denied the CPT® code 36471 for authorization. BCBS is secondary insurance and Medicare paid the claim. Is this a correct denial or we can file an appeal?

Appeal!

Most commercial insurers require pre-cert for vein work to be sure it is not cosmetic. They may allow a retro review since Medicare primary.

Authorization

But my question is that; May commercial insurance requires authorization when it is secondary and Medicare is primary?

Oh, I see

so my question to you is: is the Blue cross a Medicare supplement or a commercial plan - if supplement then you are correct that they should not deny it; if it is a commercial plan (usually a retiree of a union) then I believe they can require pre-cert.

Thank you

BCBS is a commercial plan, Thank you for the help.