Will insurance pay for lip augmentation if the lip was disfigured in an auto accident?

In general, if the lip injury is causing a functional problem, then this is something that can sometimes be addressed under insurance coverage if it is a surgical repair. It is unlikely that insurance is going to cover lip augmentation with fillers. Lip augmentation just for cosmetic purposes would probably not be covered under any scenario.
Be sure to see an expert like a facial plastic surgeon or plastic surgeon who focuses on cosmetic facial treatments in order to review all of the options in detail.
Best,

I am sorry about your injury.  It really depends on the issue whether insurance will pay or not.  The initial repair and typically issues that cause difficulty with speaking, chewing or oral competence can be covered by insurance.  If you are just looking for more volume then it is not typically covered by insurance.  

Thank you for your question, and sorry to hear about your accident.  The initial repair is often covered by insurance.  Adding fillers to the lips, however, is not usually covered.