Final answer:
Prescription drugs are not covered under plan A in Medi-gap insurance, which is a basic policy that includes certain hospital and medical costs but not medications.
Step-by-step explanation:
The item not covered under plan A in Medi-gap insurance is prescription drugs. Plan A typically covers basic benefits for hospitalization, Medicare Part A coinsurance, and hospice care, as well as some additional costs like copayments for outpatient services and emergency room visits. However, it does not cover prescription drugs, which is often highlighted as a significant gap in Medicare coverage. However, prescription drugs are not covered under plan A. This means that if you have plan A, you will need to pay for your prescription medications out-of-pocket.