I just received a denial for Medi-Cal for my poorly executed disability determination eval.

nice.
"We have reviewed all information available to us about your circumstances and find that your application for Medi-Cal.. has been denied. Your disability has been disallowed by the State Disability Evaluation Division.
The applicant's condition is not of such severity as to interfere significantly from all work activity.
Based on the evidence, the applicant's condition is not severe enough to be considered disabling."
Questions:
a) Which is it? Am I not considered disabled
at all- or just not enough to be considered unable to EVER work again, thus being inelligible? (I know the answer should probably be in the Medi-Cal fine print on their website, going there right now.)
b) I am scared about requesting a hearing over this matter. Anybody ever gone thru this?