Glossary
Redetermination
In one sentence
The first rung of a Part D appeal: the plan reviewing its own coverage determination. Evidence you send in is part of what it has to consider, which is the point of sending some.
What redetermination actually means
Part D has its own vocabulary and this is the word for the step everyone else calls an internal appeal. The plan that made the decision looks again.
The definition is worth reading closely for one clause. The review covers the determination, the evidence and findings it rested on, and any other evidence the enrollee submits or the sponsor obtains. A redetermination is not confined to the file as it stood, which is the practical reason to send the prescriber's statement rather than just disagreeing.
If the redetermination goes against you, the next rung is a reconsideration by an independent review entity, which is not part of your plan.
The text it comes from
This is the wording the definition rests on. Where it decides anything for you, read the section rather than our summary of it.
New evidence is inside the scope of the review. "Redetermination means a review of an adverse coverage determination or at-risk determination by a Part D plan sponsor, the evidence and findings upon which it is based, and any other evidence the enrollee submits or the Part D plan sponsor obtains."
42 CFR §423.560, Electronic Code of Federal Regulations, effective August 2026 · source
Where this comes from
- 42 CFR §423.560, Electronic Code of Federal Regulations, effective August 2026 — www.ecfr.gov/current/title-42/part-423/section-423.560
Where this comes up
American GLP is not a law firm, an insurer, a government office or a clinician, and nothing here is legal or medical advice. This page says what a published rule means by a word. Which rulebook governs you depends on your plan, and your own notice and plan documents govern your case.