Stephanie Raborn, JD
McGriff Employee Benefits Compliance Team
If you discover that a participant who has been ineligible for coverage is still listed as an active employee on your group health plan, you might wonder: Can you retroactively terminate their coverage back to when they first became ineligible? The short answer is usually no. Retroactive termination of health insurance coverage is generally prohibited under the Affordable Care Act (ACA), which means you’ll likely need to end coverage going forward instead of backdating it.
According to the Affordable Care Act (ACA), retroactive termination of coverage is generally prohibited. Plans and insurers can only cancel coverage retroactively in very limited cases, such as fraud or intentional misrepresentation¹. Even then, a 30-day advance notice is required. This means that if someone was mistakenly kept on your plan after losing eligibility, you typically can’t cancel their coverage retroactively to the date they became ineligible.
Instead, you’ll usually need to terminate coverage prospectively—meaning from the date you discover the error or a reasonable date soon after. Many plan administrators choose to end coverage at the end of the month when the mistake was found and offer COBRA continuation coverage starting from that date.
COBRA rules add complexity when coverage continues past eligibility. If coverage wasn’t terminated on time, you should consider when to offer COBRA and how to handle premium payments. COBRA election notices must be sent within specific timeframes, and failing to do so can lead to penalties².
For example, if an employee’s coverage should have ended months ago but wasn’t terminated, you can either:
Neither option is perfect, but terminating coverage prospectively and offering COBRA from that date is often less risky and easier to manage.
If ineligible participants remain on your plan, you risk paying claims you shouldn’t. Carriers expect employers to follow eligibility rules and may deny claims if coverage was extended improperly, especially for employees on long leaves of absence³.
Regularly auditing your carrier bills and eligibility records can help catch errors early and avoid costly claims or disputes.
If you have questions about retroactive termination of health insurance or need help managing your group health plan, contact your Marsh McLennan Agency consultant for guidance.
Footnotes
1 The ACA prohibits retroactive cancellation of coverage except for fraud or intentional misrepresentation, with required advance notice.
2 COBRA election notices must be sent within 14 to 44 days of the qualifying event or loss of coverage to avoid penalties.
3 Carriers may deny claims if coverage is extended beyond eligibility without proper documentation or policy.
McGriff Employee Benefits Compliance Team