Checking my last day of health coverage after 15 years as an operations analyst

HR said my health plan continues for a bit and I do not understand how. There are 15 people counting on me, so I am trying to be careful. I have an appointment next week. What should I do about appointments?

Ask HR to confirm the exact date in writing. I also called the insurance company to double-check.

Keep a copy of any coverage confirmation in case of later disputes.