i have a 14 mo son who was on sodium cholride and they would not cover it because it is an` injectable.  our pharmacy even thought it was weird they didnt cover it and  questioned it but we still never got it covered.  my son was able to get off the sodium chloride when he was one and off all baby food we just add a little table salt to his food and his levels are fine,  of course he still gets the florinef and cortef

i know this is all a bummer and to not have meds covered that your child needs even makes it worse. 

take care

corri