Why the type of plan matters
Coverage obtained through a private employer is often governed by ERISA, a federal law that sets its own claims and appeals process and usually limits what can be recovered in court to the benefits themselves. Individual policies bought through the marketplace, and plans for many government employees, follow different rules. In New York, state-regulated plans offer an external appeal through the Department of Financial Services, where an independent reviewer looks at certain kinds of denials, and self-funded employer plans usually have a federal external review process instead. How much deference a court gives the insurer's decision depends partly on the plan's wording and on state insurance rules. Medicare and Medicaid have their own separate appeal systems.
Materials for an appeal
Start with the denial letter, which should state the reason and the deadline for an internal appeal; those deadlines can be strict. Request a full copy of the plan document or policy, not just a summary, and the claim file the insurer relied on. Ask your doctor for a letter explaining why the treatment is needed and records supporting it. Keep the explanation of benefits statements, bills, and notes of calls with dates and representative names. If the denial was for urgent care, ask about an expedited appeal, which follows a faster track.
What we review together
In an early conversation we identify the type of plan and the appeal route that applies, because a misstep at the internal appeal stage can narrow what a court will later consider in an ERISA case. We read the policy language the insurer cited alongside the medical records. For providers, health insurance agreements may instead mean participation contracts with payers, where disputes involve reimbursement rates, audits, and recoupments, and those follow the contract's own procedures. Either way, we lay out the available steps, their deadlines, and what each one would involve. If treatment is still ongoing, we also talk about how to keep care moving while the dispute is pending.