Medical insurance premium deduction: permits tax relief for premiums and related medical payments subject to age-based limits and payment rules. Deduction for medical insurance premia allows individuals and HUFs to claim tax relief for medi-claim insurance premiums, contributions to notified health schemes, and preventive health checkups paid for the assessee, family or parents, subject to defined ceilings and age-based enhanced limits for senior citizens; payments must normally be non-cash except for preventive checkups, and lump-sum multi-year premiums are apportioned across relevant years.