The quiet way coverage is lost.
Redetermination is the annual review every Medi-Cal case goes through. It is not a new application. It is a check that the person still qualifies. For most California seniors the answer has not changed from one year to the next, which is why the most common reason coverage lapses is not ineligibility. It is an unreturned form.
Understanding the process removes most of the risk. There are two paths a renewal can take, and knowing which one you are on tells you whether you need to do anything at all.
Path one: automatic (ex parte) renewal.
Before the county asks you for anything, it tries to renew your case using information it can already see, such as income and benefit records. This is called an ex parte renewal. If that data confirms continued eligibility, the case renews on its own and you receive a notice telling you so. You do not return any forms. A large share of senior cases, especially low fixed income on the Aged and Disabled program, renew this way.
Path two: the renewal packet.
When the county cannot confirm eligibility from existing data, it mails a renewal packet, often in a yellow envelope. This form must be completed and returned, with any requested proof of income or residency, by the deadline printed on it, usually within about 60 days. You can submit it through BenefitsCal, by mail, by phone, or in person at the county office. If the deadline passes with no response, coverage ends, even if the person still qualifies.
If coverage already ended: the 90-day cure.
A lapse is usually fixable. When Medi-Cal ends for a procedural reason, an unreturned renewal rather than a finding of ineligibility, California allows a 90-day cure period. Submit the completed renewal within 90 days of the termination date, and if the person still qualifies, coverage is reinstated retroactively to the date it ended, closing the gap. The action is the same as at renewal: complete the form and return it through the county or BenefitsCal.
What seniors should do now.
Keep contact information current with the county, because every renewal notice goes to the address on file and a move is the most common reason a packet is never seen. Set up a BenefitsCal account to track renewal status and upload documents. If a parent is losing the ability to manage mail or decisions, ask the county to register you as an authorized representative so notices reach you too. When the packet arrives, treat it as time-sensitive.