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Tresiba is a brand of insulin degludec. 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, 1,606 of 5,492 Medicare Part D and Medicare Advantage drug plans (29.2%) list Tresiba on their formulary, across 79 of 286 formularies. The most common placement is tier 3 (1,405 plans, 87.5% of those covering it). 7 of the covering plans require prior authorization (0.4%), 0 step therapy and 96 a quantity limit.
176 covering plans charge a flat copay for a 30-day supply at a preferred retail pharmacy after the deductible — median $0, 112 of them $0; 1,430 charge coinsurance instead — median 17% of the drug's cost. Covered insulin is capped at $35 for a month's supply.
2026: 1,307 of 5,496 plans covered it (23.8%); 2027: 1,606 of 5,492 (29.2%).
Of 4,367 plans offered in both years, 351 added it to the formulary and 116 dropped it.
Among plans covering it both years, 23 moved it to a higher tier and 8 to a lower one; 0 added prior authorization and 0 removed it.
| Tier | Plans |
|---|---|
| Tier 1 | 64 |
| Tier 2 | 104 |
| Tier 3 | 1,405 |
| Tier 4 | 31 |
| Tier 6 | 2 |
| Plan type | Plans covering | Share | Prior auth |
|---|---|---|---|
| Stand-alone Part D (PDP) | 37 of 323 | 11.5% | 0% |
| Medicare Advantage with drugs (MA-PD) | 915 of 3,200 | 28.6% | 0.7% |
| Special needs plans (SNP) | 654 of 1,969 | 33.2% | 0.2% |
| Carrier | Plans covering | Usual tier | Prior auth |
|---|---|---|---|
| Humana | 778 of 846 | Tier 3 | 0 |
| UnitedHealthcare | 0 of 830 | No tier listed | 0 |
| Devoted Health | 414 of 728 | Tier 3 | 0 |
| Aetna Medicare | 0 of 631 | No tier listed | 0 |
| Wellcare | 0 of 268 | No tier listed | 0 |
| HealthSpring | 0 of 226 | No tier listed | 0 |
| Kaiser Permanente | 0 of 112 | No tier listed | 0 |
| SCAN Health Plan | 0 of 83 | No tier listed | 0 |
| Highmark Blue Cross Blue Shield or Highmark Blue Shield | 0 of 80 | No tier listed | 0 |
| Alignment Health Plan | 0 of 77 | No tier listed | 0 |
| Anthem Blue Cross and Blue Shield | 0 of 74 | No tier listed | 0 |
| Wellpoint | 0 of 63 | No tier listed | 0 |
| Priority Health Medicare | 0 of 40 | No tier listed | 0 |
| CarePlus Health Plans, Inc. | 37 of 37 | Tier 2 | 0 |
| Zing Health | 0 of 36 | No tier listed | 0 |
| Capital Blue Cross | 0 of 35 | No tier listed | 0 |
| Prominence Health Plan | 0 of 29 | No tier listed | 0 |
| Medica | 0 of 27 | No tier listed | 0 |
| Anthem HealthKeepers | 0 of 26 | No tier listed | 0 |
| Blue Cross Blue Shield of Michigan | 0 of 26 | No tier listed | 0 |
| State | Plans covering | Share |
|---|---|---|
| Alabama | 46 of 114 | 40.4% |
| Alaska | 1 of 9 | 11.1% |
| American Samoa | 0 of 1 | 0% |
| Arizona | 52 of 147 | 35.4% |
| Arkansas | 25 of 85 | 29.4% |
| California | 57 of 397 | 14.4% |
| Colorado | 34 of 106 | 32.1% |
| Connecticut | 11 of 54 | 20.4% |
| Delaware | 11 of 43 | 25.6% |
| District of Columbia | 1 of 12 | 8.3% |
| Florida | 206 of 545 | 37.8% |
| Georgia | 52 of 149 | 34.9% |
| Guam | 0 of 1 | 0% |
| Hawaii | 18 of 50 | 36% |
| Idaho | 10 of 45 | 22.2% |
| Illinois | 40 of 132 | 30.3% |
| Indiana | 43 of 138 | 31.2% |
| Iowa | 21 of 64 | 32.8% |
| Kansas | 24 of 84 | 28.6% |
| Kentucky | 45 of 121 | 37.2% |
| Louisiana | 52 of 125 | 41.6% |
| Maine | 13 of 52 | 25% |
| Maryland | 7 of 49 | 14.3% |
| Massachusetts | 10 of 89 | 11.2% |
| Michigan | 26 of 182 | 14.3% |
| Minnesota | 9 of 63 | 14.3% |
| Mississippi | 29 of 104 | 27.9% |
| Missouri | 56 of 170 | 32.9% |
| Montana | 15 of 27 | 55.6% |
| Nebraska | 16 of 51 | 31.4% |
| Nevada | 17 of 100 | 17% |
| New Hampshire | 10 of 25 | 40% |
| New Jersey | 25 of 73 | 34.2% |
| New Mexico | 17 of 68 | 25% |
| New York | 20 of 215 | 9.3% |
| North Carolina | 73 of 176 | 41.5% |
| North Dakota | 5 of 26 | 19.2% |
| Northern Mariana Islands | 0 of 1 | 0% |
| Ohio | 41 of 171 | 24% |
| Oklahoma | 33 of 81 | 40.7% |
| Oregon | 34 of 92 | 37% |
| Pennsylvania | 82 of 323 | 25.4% |
| Puerto Rico | 24 of 64 | 37.5% |
| Rhode Island | 1 of 29 | 3.4% |
| South Carolina | 38 of 89 | 42.7% |
| South Dakota | 5 of 30 | 16.7% |
| Tennessee | 73 of 156 | 46.8% |
| Texas | 121 of 407 | 29.7% |
| U.S. Virgin Islands | 0 of 1 | 0% |
| Utah | 20 of 53 | 37.7% |
| Vermont | 5 of 14 | 35.7% |
| Virginia | 51 of 144 | 35.4% |
| Washington | 39 of 114 | 34.2% |
| West Virginia | 25 of 69 | 36.2% |
| Wisconsin | 42 of 96 | 43.8% |
| Wyoming | 3 of 13 | 23.1% |
Medicare Part D paid for 4,285,590 30-day fills of Tresiba in 2024 for about 556,423 enrollees, at an average total cost of $405.56 per 30-day fill (CMS Part D Prescribers by Geography and Drug, national).
Price Tresiba and the rest of a client's list on every plan in their county.
Estimate Tresiba 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.