primary and secondary insurance

has anyone had WLS excluded from their primary but covered by a secondary? this is my current situation. my surgery coordinator mentioned this may be an issue as the primary may not let the secondary cover the surgery but i don't understand how it can be an issue if it's completely excluded. if it's not covered at all why wouldn't the secondary be able to pay?

if your primary won't cover at all,the secondary might refuse to pay because the primary is not paying any. 

Best advice...call the number on. Your secondary card and ask them. That is the only way you will know for sure.