BCBS says code not preventative

More specifically the insurance I have is BCBS MEA benefits trust. I’ve been trying to get confirmation of coverage before my surgery.

It’s code 58661, which I think is preventative (unless it needs Z30.2 with it?) Has anyone else had an issue with this?

They did confirm that a preventative would be fully covered as they are ACA compliant, but then told me the code isn’t preventative so I’d be subject to my deductible & 20% coinsurance.