For some children with Eosinophilic Disorders, an amino acid-based elemental formula is a large part, if not the only form of nutrition that enters their body each day. Due to allergies and reactions to so many foods, they are unable to consume a regular diet of everyday foods. These formulas are life-sustaining to these children. Without them they are sick each day, some to the point of vomiting constantly or having recurrent diarrhea.
With this in mind, one would think that the insurance world would see it as a necessary medical need, therefor providing coverage for this extremely expensive and unpalatable medical food. In most states, this is not the case. There are only 14 states that provide coverage for elemental formulas at this time, and some of those with minimal coverage at best. Here is that list with links to their coverage: