There are a few reasons why your medical claims get rejected, namely:
Claim withing the waiting period
Except for accidental injuries, medical insurances will not cover for any medical costs charged in the individual’s name within 30 days from the date of activation of the insurance policy.
Exclusion Clauses
Having access to medical card will not protect an individual from every unimaginable condition especially pre-existing illness
Unpaid Premiums
Exceeded limits