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Aimovig is a brand of erenumab. What agents check before quoting it: how many 2027 Part D plans cover it, on which tier, with what restrictions and copays, by plan type, carrier and state.
In 2027, 4,376 of 5,492 Medicare Part D and Medicare Advantage drug plans (79.7%) list Aimovig on their formulary, across 257 of 286 formularies. The most common placement is tier 3 (3,975 plans, 90.8% of those covering it). 4,341 of the covering plans require prior authorization (99.2%), 0 step therapy and 4,370 a quantity limit.
469 covering plans charge a flat copay for a 30-day supply at a preferred retail pharmacy after the deductible — median $42, 66 of them $0; 3,907 charge coinsurance instead — median 22% of the drug's cost. Once a member's out-of-pocket drug spending reaches $2,400 in 2027, covered drugs cost $0 for the rest of the year.
2026: 4,382 of 5,496 plans covered it (79.7%); 2027: 4,376 of 5,492 (79.7%).
Of 4,367 plans offered in both years, 26 added it to the formulary and 46 dropped it.
Among plans covering it both years, 44 moved it to a higher tier and 203 to a lower one; 12 added prior authorization and 2 removed it.
| Tier | Plans |
|---|---|
| Tier 1 | 113 |
| Tier 2 | 279 |
| Tier 3 | 3,975 |
| Tier 4 | 9 |
| Plan type | Plans covering | Share | Prior auth |
|---|---|---|---|
| Stand-alone Part D (PDP) | 179 of 323 | 55.4% | 100% |
| Medicare Advantage with drugs (MA-PD) | 2,515 of 3,200 | 78.6% | 99% |
| Special needs plans (SNP) | 1,682 of 1,969 | 85.4% | 99.3% |
| Carrier | Plans covering | Usual tier | Prior auth |
|---|---|---|---|
| Humana | 0 of 846 | No tier listed | 0 |
| UnitedHealthcare | 830 of 830 | Tier 3 | 830 |
| Devoted Health | 728 of 728 | Tier 3 | 728 |
| Aetna Medicare | 631 of 631 | Tier 3 | 631 |
| Wellcare | 234 of 268 | Tier 2 | 234 |
| HealthSpring | 226 of 226 | Tier 3 | 226 |
| Kaiser Permanente | 0 of 112 | No tier listed | 0 |
| SCAN Health Plan | 83 of 83 | Tier 3 | 83 |
| Highmark Blue Cross Blue Shield or Highmark Blue Shield | 80 of 80 | Tier 3 | 80 |
| Alignment Health Plan | 77 of 77 | Tier 3 | 77 |
| Anthem Blue Cross and Blue Shield | 74 of 74 | Tier 3 | 74 |
| Wellpoint | 63 of 63 | Tier 3 | 63 |
| Priority Health Medicare | 40 of 40 | Tier 3 | 40 |
| CarePlus Health Plans, Inc. | 0 of 37 | No tier listed | 0 |
| Zing Health | 36 of 36 | Tier 3 | 36 |
| Capital Blue Cross | 35 of 35 | Tier 3 | 35 |
| Prominence Health Plan | 29 of 29 | Tier 3 | 29 |
| Medica | 27 of 27 | Tier 3 | 27 |
| Anthem HealthKeepers | 26 of 26 | Tier 3 | 26 |
| Blue Cross Blue Shield of Michigan | 26 of 26 | Tier 3 | 26 |
| State | Plans covering | Share |
|---|---|---|
| Alabama | 92 of 114 | 80.7% |
| Alaska | 5 of 9 | 55.6% |
| American Samoa | 1 of 1 | 100% |
| Arizona | 124 of 147 | 84.4% |
| Arkansas | 63 of 85 | 74.1% |
| California | 314 of 397 | 79.1% |
| Colorado | 71 of 106 | 67% |
| Connecticut | 46 of 54 | 85.2% |
| Delaware | 35 of 43 | 81.4% |
| District of Columbia | 8 of 12 | 66.7% |
| Florida | 393 of 545 | 72.1% |
| Georgia | 105 of 149 | 70.5% |
| Guam | 1 of 1 | 100% |
| Hawaii | 35 of 50 | 70% |
| Idaho | 33 of 45 | 73.3% |
| Illinois | 103 of 132 | 78% |
| Indiana | 107 of 138 | 77.5% |
| Iowa | 53 of 64 | 82.8% |
| Kansas | 62 of 84 | 73.8% |
| Kentucky | 78 of 121 | 64.5% |
| Louisiana | 88 of 125 | 70.4% |
| Maine | 36 of 52 | 69.2% |
| Maryland | 31 of 49 | 63.3% |
| Massachusetts | 81 of 89 | 91% |
| Michigan | 164 of 182 | 90.1% |
| Minnesota | 54 of 63 | 85.7% |
| Mississippi | 79 of 104 | 76% |
| Missouri | 135 of 170 | 79.4% |
| Montana | 8 of 27 | 29.6% |
| Nebraska | 38 of 51 | 74.5% |
| Nevada | 74 of 100 | 74% |
| New Hampshire | 15 of 25 | 60% |
| New Jersey | 59 of 73 | 80.8% |
| New Mexico | 53 of 68 | 77.9% |
| New York | 204 of 215 | 94.9% |
| North Carolina | 146 of 176 | 83% |
| North Dakota | 21 of 26 | 80.8% |
| Northern Mariana Islands | 1 of 1 | 100% |
| Ohio | 148 of 171 | 86.5% |
| Oklahoma | 57 of 81 | 70.4% |
| Oregon | 74 of 92 | 80.4% |
| Pennsylvania | 295 of 323 | 91.3% |
| Puerto Rico | 47 of 64 | 73.4% |
| Rhode Island | 20 of 29 | 69% |
| South Carolina | 65 of 89 | 73% |
| South Dakota | 25 of 30 | 83.3% |
| Tennessee | 132 of 156 | 84.6% |
| Texas | 337 of 407 | 82.8% |
| U.S. Virgin Islands | 1 of 1 | 100% |
| Utah | 34 of 53 | 64.2% |
| Vermont | 6 of 14 | 42.9% |
| Virginia | 93 of 144 | 64.6% |
| Washington | 78 of 114 | 68.4% |
| West Virginia | 51 of 69 | 73.9% |
| Wisconsin | 75 of 96 | 78.1% |
| Wyoming | 6 of 13 | 46.2% |
Medicare Part D paid for 417,618 30-day fills of Aimovig in 2024 for about 55,767 enrollees, at an average total cost of $725.30 per 30-day fill (CMS Part D Prescribers by Geography and Drug, national).
Price Aimovig and the rest of a client's list on every plan in their county.
Estimate Aimovig costs by plan
Free tools for licensed insurance agents. Data from CMS public files; verify with plan documents before advising a client.
Counts are over every Medicare Advantage drug plan and stand-alone Part D plan in the CMS monthly formulary files, excluding employer plans. A plan counts as covering a drug when any strength or form of it is on the plan’s formulary; the tier, prior authorization, step therapy and quantity limit shown are the most favorable version on that formulary. Copays are for a 30-day supply at a preferred retail pharmacy after the deductible. This is a reference for licensed agents, not a plan recommendation; verify with the plan’s formulary before advising a client. Source: CMS Part D formulary files (release 10/08/2026). CMS formulary data.