Will an ADHD diagnosis prevent insurance from covering top surgery?

Hello, I'm a trans dude who has been previously diagnosed with autism, but I have always suspected some ADHD/attention disorder as well. I spoke with my therapist about the issue and he said he does believe I have ADHD. I would love to pursue medical treatment (like adderall) for this because as a college student the attention issues are a really big obstacle. However, that would require a formal diagnosis of ADHD. Does anyone know if receiving a formal diagnosis of ADHD would affect insurance coverage of top surgery? I have BCBS insurance if that is relevant, live in a liberal state.