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EVRYSDI

Generic: Risdiplam

Data may be stale·Apr 23, 2026
Manufacturer
Genentech
NDC
50242-175
RxCUI
2390940
Route
ORAL
ICD-10 indication
G12.1

Affordability Check

How much will you actually pay for EVRYSDI?

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About EVRYSDI

What is this medication?

Evrysdi is a prescription medicine used to treat spinal muscular atrophy, commonly known as SMA, in both adults and children. SMA is a rare genetic disorder that affects the nerve cells in the spinal cord, leading to progressive muscle weakness and loss of movement. This medication works by helping the body produce more of the survival motor neuron protein, which is vital for the health and survival of the nerve cells that control muscle movement.

This treatment is a liquid medication that is taken once daily by mouth or through a feeding tube, making it the first at-home oral therapy for this condition. It is approved for use in patients of all ages, including infants. By increasing the levels of necessary proteins throughout the central nervous system and the rest of the body, Evrysdi aims to improve motor function and help individuals with SMA maintain their physical strength and independence.

Copay & patient assistance

  • Patient Copay Amount: As little as $0 per 30-day supply
  • Maximum Annual Benefit Limit: Up to $25,000 per calendar year
  • Core Eligibility Restrictions: Must have commercial (private or non-governmental) insurance; not eligible if prescriptions are reimbursed under any federal, state, or government-funded insurance programs (e.g., Medicare, Medicaid, TRICARE, VA, etc.); must have a valid prescription for an FDA-approved indication; must be 18 years of age or older (or have a legal guardian over 18 to manage the program); must live and receive treatment in the United States or U.S. Territories; cannot be receiving assistance through the Genentech Patient Foundation or any other charitable organization for the same expenses.
  • RxBIN, PCN, and Group numbers: Not Publicly Available

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Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Medicare Part D coverage

How EVRYSDI appears across Medicare Part D plan formularies nationally. Source: CMS monthly Prescription Drug Plan file (2026-08-31).

Covered by plans

9%

515 of 5,499 plans

Most common tier

Tier 5

On 75% of covering formularies

Prior authorization required

99%

of covering formularies

TierFormularies on this tierShare
Tier 1 (preferred generic)19
22%
Tier 4 (non-preferred brand)2
2%
Tier 5 (specialty)65
75%
Tier 61
1%

Step therapy: 0% of formularies

Quantity limits: 69% of formularies

Coverage breadth: 87 of 65 formularies

How to read this:plans on the same formulary share tier + PA rules. Your specific plan's copay depends on (a) the tier above, (b) your plan's cost-share for that tier, (c) whether you're in the initial coverage phase or past the 2026 $2,000 out-of-pocket cap. For your exact plan, check its Summary of Benefits or log in to your Medicare.gov account. Copay cards don't apply to Medicare (federal law).

Prior authorization & coverage

PayerPAStep therapyCopay tier

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Medicare Part D

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Related drugs

How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.

Rare-disease navigation (specialists, trials, patient communities)

EVRYSDI treats a rare condition. For in-depth disease pages on our sister site:

UniteRare.org is our sister site for rare-disease navigation — same editorial team, same accuracy standards.