Medi Assist India — the reimbursement claim[protected] has been denied under 970000/34/17/04/00000060_non-sez.

I have undergo the reason of denial. But i am completely dissatisfied with the denial reason. I need to know the following

1. Why 'leukoplakia excision' is not being considered as treatment? 'leukoplakia' can increase risk of oral cancer if it is left unattended. If it's not a disease as per the policy then let me know why and send the list of diseases which are covered under my current policy.

2. Before i admitted for surgery, i have approval for cashless claim[protected] for inr (30000). After approval only the admission and surgery happened. At the time of discharge i come to know that cashless claim has been denied. If 'leukoplakia excision' is not covered then how come it got pre-approved first time?

Please help to understand the points asap.