istradefylline 20 MG Oral Tablet [Nourianz]
istradefylline
RxCUI: 2199026
What the CMS Formulary Data Shows for istradefylline 20 MG Oral Tablet [Nourianz]
Per the CMS 2026 Part D formulary file, istradefylline 20 MG Oral Tablet [Nourianz] (RxNorm concept RXCUI 2199026, generic name istradefylline) appears on 13 distinct formulary files spanning 160 Medicare Part D plan offerings - 3.2% of enrollable Part D products, selective placement; verify formulary inclusion before enrolling. Tier placement ranges from Tier 1 to Tier 5, with a cross-plan average of Tier 3.9.
Real-world access to istradefylline 20 MG Oral Tablet [Nourianz] depends on utilization management as much as tier placement: 46.2% of covering formularies require prior authorization. 0% require step therapy. 53.8% apply quantity limits.
Historical spending context from the CMS Medicare Part D Drug Spending Dashboard shows 3,546 Part D beneficiaries filled istradefylline 20 MG Oral Tablet [Nourianz] in 2023, with total plan-and-beneficiary spending of $49,718,992 and an average per-beneficiary annual cost of $14,021.15. The plan-by-plan detail below lists exactly which PDP and MA-PD contracts carry istradefylline 20 MG Oral Tablet [Nourianz] today.
Coverage Details
- Formularies covering
- 13
- Plans covering
- 160
- Coverage rate
- 3.2%
- Tier range
- Tier 1 – Tier 5
- Average tier
- Tier 4, Non-Preferred
Restrictions
- Prior authorization required
- 46.2% of formularies
- Step therapy required
- 0% of formularies
- Quantity limits
- 53.8% of formularies
2023 Medicare Spending
- Beneficiaries
- 3,546
- Total spending
- $49,718,992
- Avg per beneficiary
- $14,021.15
Tier Distribution Across Plans
Medicare Advantage Plans (MA-PD) Covering istradefylline 20 MG Oral Tablet [Nourianz]
100 Medicare Advantage plans with Part D drug coverage include this drug.
Frequently Asked Questions
Is istradefylline 20 MG Oral Tablet [Nourianz] covered by Medicare Part D?
Yes, istradefylline 20 MG Oral Tablet [Nourianz] is covered by 160 Medicare Part D plans (3.2% of all Part D formularies).
What tier is istradefylline 20 MG Oral Tablet [Nourianz] on Medicare Part D plans?
istradefylline 20 MG Oral Tablet [Nourianz] averages Tier 3.9 across Part D plans, ranging from Tier 1 to Tier 5.
Does istradefylline 20 MG Oral Tablet [Nourianz] require prior authorization?
46.2% of Part D formularies require prior authorization for istradefylline 20 MG Oral Tablet [Nourianz]. Step therapy: 0%. Quantity limits: 53.8%.
How much does Medicare spend on istradefylline 20 MG Oral Tablet [Nourianz]?
In 2023, total Medicare Part D spending on istradefylline 20 MG Oral Tablet [Nourianz] was $49,718,992, covering 3,546 beneficiaries. The average spend per beneficiary was $14,021.15.
Read our methodology - how this data is sourced, computed, and verified.