What Is ERISA
ERISA (Employee Retirement Income Security Act) is a 1974 federal law that governs employer-sponsored health plans. For self-funded plans, ERISA preempts state insurance regulations, meaning federal rules override state protections that typically apply to fully insured plans. This distinction fundamentally changes how your denied claims are handled and what appeal rights you have.
Impact on Claim Denials and Appeals
When your employer uses a self-funded health plan, ERISA creates a two-tier appeal process. You first submit an internal appeal directly to your plan administrator, who reviews the denial using the plan's own Plan Document criteria. If the plan denies your internal appeal, you cannot automatically take the case to your state insurance commissioner or pursue state-level remedies. Instead, you must file a federal lawsuit in U.S. District Court, which is expensive and time-consuming.
For fully insured plans (where your employer contracts with a traditional insurance carrier), state insurance regulations apply instead. This means after an internal appeal, you can request an external review through your state's insurance department at no cost, and state regulators can force the insurer to pay.
ERISA and Medical Necessity Determinations
Plan administrators under ERISA must follow their Plan Document language when evaluating medical necessity. Common ERISA plan denials cite "not medically necessary" based on the plan's specific definition, which may be stricter than what your doctor or Medicare considers necessary. ERISA plans are not required to use Medicare's definition of medical necessity, and courts typically defer to the plan administrator's interpretation unless it is clearly unreasonable.
Prior authorization denials fall under this same framework. If your plan's document requires prior authorization and your provider failed to obtain it, an ERISA plan can deny the entire claim even if the treatment was medically appropriate.
EOBs, Appeal Timelines, and ERISA Requirements
ERISA plans must issue an Explanation of Benefits (EOB) within 30 days of claim denial. The EOB must include the reason for denial, the plan document language cited, and your appeal rights. You typically have 180 days from the denial to file an internal appeal. The plan then has 30 days (or up to 72 hours for urgent/expedited claims) to respond.
If the plan administrator is also the claims processor, ERISA requires a conflict-of-interest review on appeal, though enforcement is weak. This is why documenting everything in writing matters when appealing ERISA denials.
Practical Differences From Insured Plans
- No external review option through state regulators for ERISA self-funded plans
- Plan document language controls outcomes, not state insurance rules
- Federal court litigation is the final remedy, not state insurance appeals
- Plan administrators have significant discretion in interpreting medical necessity
- No state insurance commissioner can intervene or pressure the plan to reverse a denial
Common Questions
How do I know if my plan is ERISA-governed?
Check your employee handbook or benefits summary. Look for language stating the plan is "self-funded" or "self-insured." You can also ask your HR department directly whether the plan is self-funded or fully insured. Self-funded plans fall under ERISA; fully insured plans are regulated by your state.
Can I sue my ERISA plan if they deny my claim?
Only after exhausting internal appeals. You must file a federal lawsuit under ERISA Section 502(a), which requires hiring an attorney and going through federal court. Recovery is typically limited to the cost of the denied treatment, not damages or attorney fees, making litigation often impractical.
Does my state's insurance commissioner have any power over my ERISA plan?
No. ERISA preempts state insurance regulation for self-funded plans. Your state insurance department cannot order a reversal or investigate complaints. Your only administrative recourse is the plan's internal appeal process.