Hi Guest! Great question. I can”t really comment on whether the logic behind that makes sense or not, however yes it is fairly common for a medical insurer to offer coverage for a surgical part of treatment, but not a part of treatment they consider dental or cosmetic in nature. (many medical policies will offer coverage for orthodontic services for medically necessary pediatric ortho (19 & under) or in accident cases as well). If you would like to tell me the name of your insurance company, I would be happy to look up their medical coverage policy for cleft lip/palate and orthodontic procedures to see if I can shed some light on if the policy is in fact written that way or not.