Two different questions
When a health plan denies coverage, there are generally two kinds of second look. In an internal review, you ask the insurer or plan administrator to reconsider. In an external review, you ask an independent organization, not part of the insurer, to examine the decision. The first is almost always required before the second, but the details depend heavily on your country, state, plan type and employer. This article is general information, not insurance or legal advice.
Internal review
Who decides. The plan’s own staff, often someone different from the person who made the first decision. For medical questions, a clinician may be involved.
What you submit. Typically a written request, referencing the denial, plus supporting material such as medical records, a clinician’s letter and relevant policy language.
Timing. The notice usually sets a filing deadline, often several months, and the plan often has a set period to respond. Faster tracks may exist when delay could seriously jeopardize health. Ask whether an expedited option applies.
Possible outcomes. The plan may overturn the denial, partly overturn it, or uphold it. Upholding does not always end the matter, but it often opens the door to the next stage.
Strengths. It is usually faster and less formal. Many errors, especially administrative ones, are fixed here. Typical examples include a wrong code or missing record.
Limits. The insurer is reviewing its own decision, so some people feel it is less neutral. The plan is still bound by its contract and the rules that apply to it.
External review
Who decides. An independent review organization or government-linked body, depending on your location. The reviewer is meant to be separate from the insurer, and in many systems is assigned by a regulator or chosen in a way that avoids the insurer picking.
What it covers. Often, disputes about whether care was medically necessary, appropriate or experimental. Pure contract questions, such as whether a service falls within coverage exclusions, may be handled differently or sent to another channel. Eligibility for external review varies.
What you submit. A request form, the denial notices, and supporting records. The insurer typically sends its own file to the reviewer.
Cost. Some systems charge little or nothing, while others may have a modest fee. Check locally.
Timing. Deadlines to request external review after an internal denial are often short enough that you should act quickly. Review periods may be longer than for an internal appeal, though expedited options may exist for urgent situations.
Binding or not. In some systems, an external decision in your favor binds the insurer. In others it may be advisory. Do not assume; check your notice.
Side-by-side summary
| Internal review | External review | |
|---|---|---|
| Decided by | Insurer or plan | Independent organization |
| Usually comes | First | After internal review is complete |
| Best suited to | Errors, missing information, first challenges | Medical-judgment and similar disputes |
| Insurer bound by outcome | Yes, it is the insurer’s decision | Often, but varies |
| Typical formality | Lower | Somewhat higher |
Exceptions and shortcuts
Some situations allow skipping or speeding up steps: urgent medical need, or an insurer that fails to follow its own procedures or deadlines. Rules on this differ, so ask the plan or an official consumer assistance office what applies. Plans run by an employer on a self-funded basis often follow separate procedures from fully insured ones. Government programs also often use their own appeal systems with different stages and names, such as hearings.
Practical advice
- Read the denial letter for the reviewing options and deadlines. If it is unclear, ask in writing.
- Build the strongest record at the internal stage. Documents not submitted then may be hard to add later, depending on the system.
- Ask your clinician whether a supporting letter is possible.
- Keep copies and notes of every contact.
- Consider whether a complaint to a regulator might also be worth filing alongside, since it is a separate track.
Neither type of review guarantees a result. Still, many people find that following the process carefully, and meeting each deadline, gives them the best realistic chance of a fair examination. For help specific to your plan, a consumer assistance program or qualified professional can explain the process in your area.