You likely have the right to access records that explain why your insurer denied your claim or prior authorization request. Use ProPublica’s free tool to generate a letter requesting your claim file from your health insurance company.
Wow what timing. Struggling to get a claim approved with Anthem for a service they've been approving routinely all year. None of their customer service people can help me and I've been on the phone for the past 3 hours. Insurance companies are miserable.