medicines
Drug Formulary
処方薬リスト (shohōyaku risuto)
A drug formulary is a list of prescription medications covered by a health insurance plan. Formularies are organized into tiers, typically ranging from Tier 1 (generic, lowest cost) to Tier 4 or 5 (specialty drugs, highest cost). Drugs not on the formulary require an exception or prior authorization. Formularies change annually and sometimes mid-year; patients should verify their medications are covered before enrolling in a plan or filling a new prescription. Generic substitutes are often available for off-formulary drugs.
Checking the formulary before selecting a plan is especially important for patients who take regular prescription medications.
In 9 languages
| Language | Term |
|---|---|
| English | Drug Formulary |
| Japanese (日本語) | 処方薬リスト |
| Chinese (中文) | 药品目录 |
| Korean (한국어) | 의약품 목록 |
| Portuguese | Formulário de Medicamentos |
| Spanish | Formulario de Medicamentos |
| Filipino | Drug Formulary |
| Thai | บัญชียาที่ครอบคลุม |
| Vietnamese | Danh sách thuốc được bảo hiểm |
| Romanization | shohōyaku risuto |
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Browse US healthcare guides →Last reviewed: September 2026