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Glossary

The words a denial letter uses

15 terms · 10 documents cited · Read September 2026

Every term below is defined from the regulation that defines it, not from a paraphrase. Several of them mean different things depending on which program you are in, so they are grouped by the rulebook the definition comes from.

All programs

Medicaid

Medicare Part D

Commercial and employer plans

Why a glossary needs sources at all

Most benefits glossaries are written from memory, and it shows in the places where the everyday meaning of a word has drifted from the regulatory one. Two examples from this page. A grievance sounds like the general word for complaining about a denial; it is defined by exclusion as dissatisfaction about anything that is not the coverage decision, so filing one in place of an appeal does not challenge the denial and does not stop the clock. And an appeal, in Medicaid managed care, means the plan reviewing itself — not the state hearing that most people picture.

Getting either of those backwards costs a reader a route, which is why each definition here is quoted rather than summarized, and why the section it came from is printed underneath it. Where a term genuinely means two different things in two programs, both are given and each is labeled.

None of this is legal or medical advice. It is what published documents say the words mean. Your own notice and plan documents govern your case. If you want the procedure rather than the vocabulary, the procedures pages set out what to file and when, the answers settle the harder questions, and the deadline calculator counts to dates from the date on your own notice.