“Secondary insurance” refers to a health insurance policy that provides additional coverage beyond what is offered by a primary insurance plan. It acts as a supplemental layer of protection, helping to cover costs that your primary insurance doesn’t fully pay, such as deductibles, copayments, coinsurance, or even services not covered at all by your main plan.
How Secondary Insurance Works: Coordination of Benefits (COB)
The key to understanding secondary insurance is the concept of Coordination of Benefits (COB). This is a process used by insurance companies to determine which plan pays first (the primary plan) and which plan pays second (the secondary plan) when an individual has more than one health insurance policy. The goal of COB is to ensure that you don’t receive more than 100% of the medical costs and to prevent duplicate payments.
Here’s the typical process:
- Primary Insurance Pays First: When you receive medical care, the claim is always submitted to your primary insurance plan first. This plan processes the claim according to its own benefits, deductibles, copayments, and coinsurance rules, and pays its share of the bill.
- Remaining Costs Go to Secondary Insurance: After the primary insurance has paid its portion, any remaining eligible costs (e.g., the amount that went towards your deductible, your coinsurance portion, or services not fully covered by the primary plan) are then sent to your secondary insurance.
- Secondary Insurance Pays Its Share: The secondary insurer reviews the claim, taking into account what the primary insurer has already paid. It then pays according to its own policy terms and coverage limits. The combined payments from both plans should not exceed 100% of the total eligible cost of the medical service.
- Your Responsibility: After both the primary and secondary insurance plans have paid their shares, you will be billed for any remaining balance that was not covered by either policy.
You generally don’t get to choose which plan is primary and which is secondary. Insurance companies have specific rules for determining this, often based on factors like:
- Your employer’s plan vs. a spouse’s plan: Your employer-sponsored plan is usually primary.
- The “Birthday Rule” for children: For children covered by both parents’ plans, the plan of the parent whose birthday falls earlier in the calendar year (month and day, not year) is usually primary.
- Medicare: If you have Medicare and another form of insurance (like a group health plan from an employer), the rules can vary, but Medicare is often primary.
Types of Secondary Insurance
Secondary insurance can take several forms, designed to fill different gaps in coverage:
- Another Employer-Sponsored Plan: If you’re covered by your own job’s health insurance and also by your spouse’s plan as a dependent (or vice-versa).
- Parent’s Plan for Young Adults: If you’re under 26 and covered by your parent’s health insurance, but also have your own plan through your employer or school.
- Medicare Supplement Plans (Medigap): For individuals with Original Medicare (Parts A and B), Medigap policies help cover out-of-pocket costs like deductibles, copayments, and coinsurance that Medicare doesn’t fully cover.
- Medicaid: If you qualify for Medicaid and also have private insurance, Medicaid often acts as the secondary payer.
- Retiree Health Coverage: If you have health insurance from a former employer in retirement, this often acts as secondary coverage to Medicare.
- Supplemental/Voluntary Insurance Plans: These are often purchased to cover specific needs not typically included in a standard health plan or to provide a cash benefit for specific events. Examples include:
- Dental Insurance: Covers a portion of dental care costs (cleanings, fillings, etc.).
- Vision Insurance: Covers eye exams, glasses, and contact lenses.
- Accident Insurance: Pays a lump sum cash benefit if you suffer a covered injury due to an accident.
- Critical Illness Insurance: Pays a lump sum if you are diagnosed with a specific serious illness (e.g., cancer, heart attack).
- Hospital Indemnity Insurance: Pays a fixed cash amount for each day you are hospitalized.
- Long-Term Care Insurance: Covers costs for services like nursing home care, assisted living, or in-home care if you can no longer perform daily activities.
Benefits of Having Secondary Insurance:
- Reduced Out-of-Pocket Costs: This is the primary benefit, as it can help cover deductibles, copayments, and coinsurance left over by the primary plan.
- Broader Coverage: It can provide coverage for services or treatments that your primary plan may not cover at all (e.g., dental or vision if not included in your medical plan).
- Increased Financial Protection: For those with high medical needs or facing major health events, secondary insurance offers an extra layer of financial security against significant bills.
- Access to More Providers: Different plans may have different networks, potentially expanding your choice of doctors and hospitals.
While having secondary insurance can significantly reduce your financial burden related to healthcare, it’s important to consider the additional premium costs and to understand how the two plans coordinate their benefits to ensure it’s a worthwhile investment for your specific needs.