Thought I’d come here instead of legal advice or insurance subreddits.

I am actually now bothered by my “narrow upper corridor”. This is not a cosmetic concern. I actually think it’s affecting my breathing and airway. And maybe other health conditions that concern with mouth breathing.

I have an overbite. Big front two teeth. And pinched in premolars “Narrow buccal corridor”. Imagine if you pinched the pre-molars inward with your fingers. Especially the second premolar.

An orthodontist I checked with focuses on expanding the upper palate. But United Healthcare insurance thinks it’s “cosmetic” because it’s from an orthodontist or something like that. I really like this dentist too. He goes to Dr. Mew seminars and is passionate about nasal airway breathing and know it’s relation to teeth “posture”.

How can I get an expander from a doctor who knows what they are doing with insurance? Or What can I reason to insurance?