Medicare drug coverage

Lenalidomide in Missouri: 2027 Part D coverage

171 of 171 Part D plans offered in Missouri (100%) list lenalidomide on their 2027 formulary, the same share as 2026. 100% of those require prior authorization, step therapy, or a quantity limit.

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Missouri compared with the nation

100% of the 171 Part D plans offered in Missouri leave lenalidomide off the 2027 formulary or restrict it, against 98% nationally (2 points higher). Missouri ranks 18 of 51 from most to least restrictive. A plan offered in several states counts in each.

Lenalidomide in every state and by parent organization

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

2027 compared with 2026

lenalidomide Part D coverage, 2026 and 2027
Measure20262027Change
Part D plans in the file155171+16
Plans that list it155 (100%)171 (100%)no change
Prior authorization (of plans that list it)155 (100%)171 (100%)no change
Step therapy (of plans that list it)0 (0%)0 (0%)no change
Quantity limit (of plans that list it)152 (98%)171 (100%)+2 points
Any of the three (of plans that list it)155 (100%)171 (100%)no change
Not listed or restricted (of all plans)155 (100%)171 (100%)no change

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

Formulary tier

lenalidomide formulary tier, 2026 and 2027
Tier2026 plans2027 plans
Tier 16 (4%)5 (3%)
Tier 5149 (96%)166 (97%)

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

lenalidomide: plans in both 2026 and 2027
Plan by planPlans
Same plan id in both years132
Listed it in 2026, not in 20270 (0%)
Listed it in 2027, not in 20260 (0%)
Moved it to a higher tier1 (1%)
Added prior authorization0 (0%)
Added step therapy0 (0%)
Added a quantity limit1 (1%)
Added at least one of the three1 (1%)
Removed at least one of the three0 (0%)
Plan ids new in 202739
2026 plan ids not in the 2027 file23

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

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Lenalidomide in other states

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

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

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