Medicare drug coverage
Xigduo: 2027 Medicare Part D coverage
2,360 of 5,495 Part D plans (43%) list Xigduo on their 2027 formulary, the plan's list of covered drugs (down 51 points from 2026). 99% of those require prior authorization, step therapy, or a quantity limit. Plan counts include both Medicare Advantage plans with drug coverage (5,172 MA-PD) and stand-alone drug plans (323 PDP).
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2027 compared with 2026
Xigduo is number 191 by total Medicare Part D spending in 2024 ($204 million). Plans that list it most often put it on tier 3 (a tier is the cost level a plan puts a drug on; a lower tier usually costs less). Counts use 6 RxNorm products for this name.
| Measure | 2026 | 2027 | Change |
|---|---|---|---|
| Part D plans in the file | 5,518 | 5,495 | -23 |
| Plans that list it | 5,163 (94%) | 2,360 (43%) | -51 points |
| Prior authorization (of plans that list it) | 0 (0%) | 0 (0%) | no change |
| Step therapy (of plans that list it) | 1 (<1%) | 0 (0%) | no change |
| Quantity limit (of plans that list it) | 5,027 (97%) | 2,348 (99%) | +2 points |
| Any of the three (of plans that list it) | 5,027 (97%) | 2,348 (99%) | +2 points |
| Not listed or restricted (of all plans) | 5,382 (98%) | 5,483 (>99%) | +1 point |
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
Source: CMS 2026 Part D formulary file (basic drugs and plan information), as of September 30, 2026. Publisher page
Every 2027 stand-alone drug plan
Each stand-alone Part D plan (PDP) with Xigduo's 2027 tier and limits. CMS files a PDP once per region, so one plan name can have several plan IDs; the row shows the tier and limits most of them use. Medicare Advantage drug plans are local: pick a state for its plan-by-plan table.
| Plan (PDP) | Plan IDs | 2027 tier | 2027 limits |
|---|---|---|---|
| AARP Medicare Rx Preferred from UHC (PDP) | 39 | Tier 3 | QL |
| AARP Medicare Rx Saver from UHC (PDP) | 34 | Tier 3 | QL |
| Blue Medicare Rx Enhanced (PDP) | 1 | Tier 3 | QL |
| Blue Medicare Rx Standard (PDP) | 1 | Tier 3 | QL |
| Blue MedicareRx Essentials (PDP) | 1 | Tier 3 | QL |
| Blue MedicareRx Plus (PDP) | 1 | Tier 3 | QL |
| Blue MedicareRx Premier (PDP) | 1 | Not listed | Not listed |
| Blue MedicareRx Value (PDP) | 1 | Tier 3 | QL |
| Blue MedicareRx Value Plus (PDP) | 1 | Not listed | Not listed |
| Blue Shield Rx Enhanced (PDP) | 1 | Tier 3 | QL |
| Blue Shield Rx Plus (PDP) | 1 | Tier 3 | QL |
| BlueMedicare Complete Rx (PDP) | 1 | Tier 3 | QL |
| BlueMedicare Premier Rx (PDP) | 2 | Not listed | Not listed (1 of 2 IDs) |
| BlueMedicare Value Rx (PDP) | 1 | Not listed | Not listed |
| BlueRx Enhanced Plus (PDP) | 1 | Tier 3 | QL |
| BlueRx Essential (PDP) | 1 | Tier 3 | QL |
| HealthSpring Assurance Rx (PDP) | 35 | Not listed | Not listed |
| HealthSpring Extra Rx (PDP) | 2 | Not listed | Not listed |
| HealthSpring Extra RX (PDP) | 3 | Not listed | Not listed |
| Horizon Medicare Blue Rx Enhanced (PDP) | 1 | Tier 3 | QL |
| Horizon Medicare Blue Rx Standard (PDP) | 1 | Tier 3 | QL |
| Humana Basic Rx Plan (PDP) | 34 | Not listed | Not listed |
| Humana Premier Rx Plan (PDP) | 34 | Not listed | Not listed |
| Humana Value Rx Plan (PDP) | 34 | Not listed | Not listed |
| MedicareBlue Rx Standard (PDP) | 1 | Tier 3 | QL |
| Prescription Blue Premium (PDP) | 1 | Tier 3 | QL |
| Prescription Blue Select (PDP) | 1 | Tier 3 | QL |
| SilverScript Choice (PDP) | 20 | Tier 3 | QL |
| Wellcare Classic (PDP) | 34 | Tier 2 | QL |
| Wellcare Value Script (PDP) | 34 | Tier 2 | QL |
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
Source: CMS CY2027 landscape file (states and parent organizations), as of September 30, 2026. Publisher page
Formulary tier
| Tier | 2026 plans | 2027 plans |
|---|---|---|
| Tier 1 | 160 (3%) | 34 (1%) |
| Tier 2 | 9 (<1%) | 268 (11%) |
| Tier 3 | 4,962 (96%) | 2,050 (87%) |
| Tier 6 | 32 (1%) | 8 (<1%) |
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
Source: CMS 2026 Part D formulary file (basic drugs and plan information), as of September 30, 2026. Publisher page
Plan by plan, 2026 to 2027
4,380 plan IDs are in both files. 80 of them (2%) added prior authorization, step therapy, or a quantity limit for Xigduo, and 2,098 stopped listing it.
| Plan by plan | Plans |
|---|---|
| Same plan ID in both years | 4,380 |
| Listed it in 2026, not in 2027 | 2,098 (48%) |
| Listed it in 2027, not in 2026 | 0 (0%) |
| Moved it to a higher tier | 9 (<1%) |
| Added prior authorization | 0 (0%) |
| Added step therapy | 0 (0%) |
| Added a quantity limit | 80 (2%) |
| Added at least one of the three | 80 (2%) |
| Removed at least one of the three | 1 (<1%) |
| Plan IDs new in 2027 | 1,115 |
| 2026 plan IDs not in the 2027 file | 1,138 |
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
Source: CMS 2026 Part D formulary file (basic drugs and plan information), as of September 30, 2026. Publisher page
States from most to least restrictive
Share of 2027 Part D plans offered in each state that leave Xigduo off the formulary or list it with prior authorization, step therapy, or a quantity limit. 50 states tie for the highest share, 100%; Massachusetts ranks last at 87%. States at the same share are marked Tied and share a rank.
| Rank | State | 2027 plans | Not listed or restricted | Prior auth or step therapy | Change from 2026 |
|---|---|---|---|---|---|
| Tied 1 | Alaska | 9 | 100% | 0% | no change |
| Tied 1 | Alabama | 115 | 100% | 0% | no change |
| Tied 1 | Arkansas | 86 | 100% | 0% | no change |
| Tied 1 | Arizona | 148 | 100% | 0% | +4 points |
| Tied 1 | California | 397 | 100% | 0% | no change |
| Tied 1 | Colorado | 106 | 100% | 0% | no change |
| Tied 1 | Connecticut | 54 | 100% | 0% | +4 points |
| Tied 1 | District of Columbia | 21 | 100% | 0% | no change |
| Tied 1 | Delaware | 43 | 100% | 0% | no change |
| Tied 1 | Florida | 549 | 100% | 0% | +3 points |
| Tied 1 | Georgia | 151 | 100% | 0% | no change |
| Tied 1 | Hawaii | 50 | 100% | 0% | +4 points |
| Tied 1 | Iowa | 64 | 100% | 0% | +12 points |
| Tied 1 | Idaho | 45 | 100% | 0% | no change |
| Tied 1 | Illinois | 133 | 100% | 0% | +1 point |
| Tied 1 | Indiana | 140 | 100% | 0% | +2 points |
| Tied 1 | Kansas | 84 | 100% | 0% | no change |
| Tied 1 | Kentucky | 123 | 100% | 0% | +1 point |
| Tied 1 | Louisiana | 126 | 100% | 0% | no change |
| Tied 1 | Maryland | 49 | 100% | 0% | +5 points |
| Tied 1 | Maine | 52 | 100% | 0% | no change |
| Tied 1 | Michigan | 183 | 100% | 0% | no change |
| Tied 1 | Minnesota | 63 | 100% | 0% | +7 points |
| Tied 1 | Missouri | 171 | 100% | 0% | +2 points |
| Tied 1 | Mississippi | 105 | 100% | 0% | no change |
| Tied 1 | Montana | 27 | 100% | 0% | no change |
| Tied 1 | North Carolina | 177 | 100% | 0% | +4 points |
| Tied 1 | North Dakota | 26 | 100% | 0% | +15 points |
| Tied 1 | Nebraska | 51 | 100% | 0% | +7 points |
| Tied 1 | New Hampshire | 25 | 100% | 0% | no change |
| Tied 1 | New Jersey | 74 | 100% | 0% | no change |
| Tied 1 | New Mexico | 68 | 100% | 0% | no change |
| Tied 1 | Nevada | 100 | 100% | 0% | +5 points |
| Tied 1 | New York | 215 | 100% | 0% | +3 points |
| Tied 1 | Ohio | 173 | 100% | 0% | no change |
| Tied 1 | Oklahoma | 81 | 100% | 0% | no change |
| Tied 1 | Oregon | 92 | 100% | 0% | no change |
| Tied 1 | Pennsylvania | 324 | 100% | 0% | +1 point |
| Tied 1 | Rhode Island | 29 | 100% | 0% | no change |
| Tied 1 | South Carolina | 91 | 100% | 0% | +8 points |
| Tied 1 | South Dakota | 30 | 100% | 0% | +13 points |
| Tied 1 | Tennessee | 157 | 100% | 0% | no change |
| Tied 1 | Texas | 412 | 100% | 0% | +1 point |
| Tied 1 | Utah | 53 | 100% | 0% | no change |
| Tied 1 | Virginia | 145 | 100% | 0% | no change |
| Tied 1 | Vermont | 14 | 100% | 0% | no change |
| Tied 1 | Washington | 114 | 100% | 0% | no change |
| Tied 1 | Wisconsin | 97 | 100% | 0% | +14 points |
| Tied 1 | West Virginia | 70 | 100% | 0% | no change |
| Tied 1 | Wyoming | 13 | 100% | 0% | no change |
| 51 | Massachusetts | 92 | 87% | 0% | +21 points |
Source: CMS CY2027 landscape file (states and parent organizations), as of September 30, 2026. Publisher page
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
By parent organization
164 parent organizations offer 2027 Part D plans. Humana Inc. has the most, 884, and 100% of them leave Xigduo off or restrict it.
| Parent organization | 2027 plans ↑ | List it | Restrict it (of listing) | Not listed or restricted | Change from 2026 | Plans that added a restriction |
|---|---|---|---|---|---|---|
| AIDS Healthcare Foundation | 1 | 0% | none list it | 100% | no change | 0 |
| Alameda Alliance for Health | 1 | 0% | none list it | 100% | no change | 0 |
| AllCare Health, Inc. | 1 | 0% | none list it | 100% | no change | 0 |
| AlohaCare | 1 | 100% | 100% | 100% | +100 points | 1 |
| BCBS MN, MT, NE, ND, WY, Wellmark IA and SD | 1 | 100% | 100% | 100% | no change | 0 |
| CareOregon, Inc. | 1 | 0% | none list it | 100% | no change | 0 |
| Contra Costa Health Services | 1 | 0% | none list it | 100% | no change | 0 |
| DLP Marquette Health Plan, LLC | 1 | 0% | none list it | 100% | no change | 0 |
| Health Plan of San Mateo | 1 | 0% | none list it | 100% | no change | 0 |
| IMPERIAL COUNTY LOCAL HEALTH AUTHORITY | 1 | 0% | none list it | 100% | no change | 0 |
| INLAND EMPIRE HEALTH PLAN | 1 | 0% | none list it | 100% | no change | 0 |
| Itasca County | 1 | 0% | none list it | 100% | no change | 0 |
| Kern Health Systems (KHS) | 1 | 0% | none list it | 100% | no change | 0 |
| Local Initiative Health Authority for LA County | 1 | 0% | none list it | 100% | no change | 0 |
| Muscogee Creek Nation | 1 | 0% | none list it | 100% | new in 2027 | 0 |
| Orange County Health Authority | 1 | 100% | 100% | 100% | no change | 0 |
| SAN FRANCISCO HEALTH AUTHORITY | 1 | 0% | none list it | 100% | no change | 0 |
| SAN JOAQUIN COUNTY HEALTH COMMISSION | 1 | 0% | none list it | 100% | no change | 0 |
| SANTA BARBARA SAN LUIS OBISPO REGIONAL HEALTH AUTH | 1 | 0% | none list it | 100% | no change | 0 |
| SANTA CLARA COUNTY HEALTH AUTHORITY | 1 | 0% | none list it | 100% | no change | 0 |
| SANTA CRUZ MONTEREY MERCED SAN BENITO MARIPOSA MAN | 1 | 0% | none list it | 100% | no change | 0 |
| Samaritan Health Services, Inc. | 1 | 0% | none list it | 100% | no change | 0 |
| The Schroer Group, Inc. | 1 | 0% | none list it | 100% | no change | 0 |
| Ventura County Medi-Cal Managed Care Commission | 1 | 100% | 100% | 100% | no change | 0 |
| BayCare Health System, Inc. | 2 | 100% | 100% | 100% | no change | 0 |
Source: CMS CY2027 landscape file (states and parent organizations), as of September 30, 2026. Publisher page
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
Near it by Part D spending
About this data
A plan here is one Part D plan as the CMS formulary files list it: contract, plan, and segment. That covers Medicare Advantage plans with drug coverage and stand-alone drug plans. A plan lists a drug when its formulary has a row for any RxNorm product of that name. When it has several, the row with the lowest tier is the one counted, and restricted means that row has prior authorization, step therapy, or a quantity limit.
A plan with no row for the drug counts as not listing it. That can be a product the file codes another way, so read a low count as a lookup result, not a coverage decision. A state counts every plan the CMS landscape file offers there. Parent organizations are named as CMS names them. The drug list is the top 200 by total Part D spending.
Source: CMS 2027 Part D formulary file (basic drugs and plan information), as of October 8, 2026. Publisher page
Source: CMS CY2027 landscape file (states and parent organizations), as of September 30, 2026. Publisher page
Source: CMS Medicare Part D Spending by Drug, 2024 data, as of June 25, 2026. Publisher page