Use the label, not your memory
When you compare drug coverage, similar medication names can lead to very different questions. Build your list from current prescription labels or a medication record you have confirmed with your clinician or pharmacist.
For each medicine, note the name, strength, dosage form, quantity and how often you refill it. Include the pharmacy you use and any alternatives you are comfortable considering. Keep this list somewhere private; you do not need to send it to PlanMatch.
Check more than whether a drug appears
A plan’s formulary is its list of covered drugs. Check the exact medicine and the specific coverage year. Coverage can also involve prior authorization, step therapy or quantity limits. Ask the plan which rules apply to your prescription.
Write a separate question beside each unresolved item. For example: “Does this strength need approval?” or “Does this quantity fit the plan’s limit?” Specific questions are easier for a plan or pharmacist to answer than a general question about whether your medicines are covered.
Keep the comparison consistent
Use the same list when comparing each option. If you change a dose, pharmacy or refill quantity midway through the process, update every comparison. Otherwise, a lower estimate may reflect different inputs rather than a difference in coverage.
Record the estimated yearly drug cost and what information you entered to obtain it. Include the date. An estimate is a planning aid; confirm current coverage and pharmacy participation with the plan before relying on it.
Take unresolved questions to the right person
A pharmacist can help clarify medication details. Your prescriber can address treatment questions. The plan can explain coverage requirements and how to request a coverage decision or exception.
Do not stop, replace or change a medication to make a plan comparison work. If a plan’s rules create a concern, ask your prescriber and the plan about the appropriate next steps. Bring the same written list to those conversations so important details do not get lost.
Sources & further reading
How drug plans work ↗Medicare drug plan rules ↗Sources checked October 14, 2026. Check current official guidance and your plan documents before acting.
This is general education. Your plan, Medicare or Social Security can confirm the rules for your circumstances. Our editorial policy explains how we use sources.