Plan Document

The plan document is the legal instrument that creates an employer health plan and states its terms: who is eligible, what is covered, how claims are decided, who has authority to change the plan, and how it is funded. ERISA requires every plan to have one in writing. The Summary Plan Description is the plain-language version given to members; the plan document is what a court reads.

When a claim is denied and appealed, the plan document decides the outcome, not the benefits booklet and not what HR said. That's why its wording matters. A self-funded plan document that says the plan pays "usual and customary" charges for out-of-network care is exposed to whatever the market calls customary; one that says the plan pays a defined percentage of Medicare is a reference-based pricing plan. Many small employers don't actually have a plan document; they have a carrier certificate and nothing wrapping it, which is a compliance gap the Department of Labor asks about first in an audit. A wrap document is the fix, and it usually costs a few hundred dollars to prepare.

The takeaway: if you sponsor a plan, be able to put your hand on the plan document today. If you're a member with a denied claim, request it in writing; ERISA gives you the right to a copy within 30 days.