Medicare drug coverage
Potassium chloride in Iowa: 2027 Part D coverage
64 of 64 Part D plans offered in Iowa (100%) list potassium chloride on their 2027 formulary, the plan's list of covered drugs (the same share as 2026). 0% of those require prior authorization, step therapy, or a quantity limit. Plan counts include both Medicare Advantage plans with drug coverage (55 MA-PD) and stand-alone drug plans (9 PDP).
License: a US government work, in the public domain (Public Domain Mark 1.0).
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Every 2027 plan in Iowa
Each Part D plan offered in Iowa, with potassium chloride's 2026 and 2027 tier and its 2027 limits. A tier is the cost level a plan puts a drug on; a lower tier usually costs less. Enter a ZIP to see only the plans offered in that county.
PA is prior authorization (the plan must approve it first), ST is step therapy (try another drug first), and QL is a quantity limit. D-SNP, C-SNP, and I-SNP are Special Needs Plans: for people with both Medicare and Medicaid, with certain chronic conditions, or who live in a nursing home or need that level of care. Plans are listed by plan ID.
| Plan | Plan ID | Type | 2026 tier | 2027 tier | 2027 PA / ST / QL | Change |
|---|---|---|---|---|---|---|
| Humana Gold Plus H0028-053 (HMO) | H0028-053-001 | MA-PD (HMO) | Tier 2 | Tier 2 | None | No change |
| UHC Dual Complete IA-S001 (HMO-POS D-SNP) | H0169-001-000 | MA-PD (HMO-POS D-SNP) | Tier 1 | Tier 1 | None | No change |
| Wellpoint Full Dual Advantage (HMO-POS D-SNP) | H0907-003-000 | MA-PD (HMO-POS D-SNP) | Tier 1 | Tier 1 | None | No change |
| AARP Medicare Advantage from UHC NE-0002 (PPO) | H1278-020-000 | MA-PD (PPO) | Tier 1 | Tier 1 | None | No change |
| Aetna Medicare Signature Classic (PPO) | H1608-001-000 | MA-PD (PPO) | Tier 2 | Tier 2 | None | No change |
| Aetna Medicare Enhanced Classic Extra (PPO) | H1608-117-000 | MA-PD (PPO) | Tier 2 | Tier 2 | None | No change |
| Aetna Medicare Signature (HMO-POS) | H1609-001-000 | MA-PD (HMO-POS) | Tier 2 | Tier 2 | None | No change |
| Aetna Medicare Value Care (HMO-POS) | H1609-068-000 | MA-PD (HMO-POS) | Tier 2 | Tier 2 | None | No change |
| Aetna Medicare Signature Extra (HMO-POS) | H1609-069-000 | MA-PD (HMO-POS) | Tier 2 | Tier 2 | None | No change |
| Great Plains Medicare Advantage (HMO I-SNP) | H1787-001-000 | MA-PD (HMO I-SNP) | Tier 2 | Tier 2 | None | No change |
| Great Plain Medicare Advantage Gold (HMO I-SNP) | H1787-002-000 | MA-PD (HMO I-SNP) | Tier 2 | Tier 2 | None | No change |
| MercyOne Health Plan Choice (PPO) | H1846-007-000 | MA-PD (PPO) | Tier 2 | Tier 2 | None | No change |
| Wellcare Iowa Total Care Dual Liberty Sync (HMO-POS D-SNP) | H1862-003-000 | MA-PD (HMO-POS D-SNP) | Tier 2 | Tier 1 | None | Tier 2 to 1 |
| Wellcare Iowa Total Care Dual Access (HMO-POS D-SNP) | H1862-004-000 | MA-PD (HMO-POS D-SNP) | Tier 2 | Tier 1 | None | Tier 2 to 1 |
| Wellcare Simple (HMO-POS) | H1862-005-000 | MA-PD (HMO-POS) | Tier 1 | Tier 1 | None | No change |
| Wellcare Iowa Total Care Dual Reserve (HMO-POS D-SNP) | H1862-006-000 | MA-PD (HMO-POS D-SNP) | Tier 2 | Tier 1 | None | Tier 2 to 1 |
| AARP Medicare Advantage Essentials from UHC NE-3 (HMO-POS) | H2802-001-000 | MA-PD (HMO-POS) | Tier 1 | Tier 1 | None | No change |
| AARP Medicare Advantage Extras from UHC NE-5 (HMO-POS) | H2802-074-000 | MA-PD (HMO-POS) | Tier 1 | Tier 1 | None | No change |
| MercyOne Health Plan No Premium (HMO) | H3668-025-000 | MA-PD (HMO) | Tier 2 | Tier 2 | None | No change |
| MercyOne Health Plan Plus (HMO) | H3668-026-000 | MA-PD (HMO) | Tier 2 | Tier 2 | None | No change |
| MercyOne Health Plan Cash Back (HMO) | H3668-031-000 | MA-PD (HMO) | Tier 2 | Tier 2 | None | No change |
| Senior Care (HMO I-SNP) | H4127-001-000 | MA-PD (HMO I-SNP) | New plan ID | Tier 1 | None | New plan ID in 2027 |
| Premier (HMO I-SNP) | H4127-002-000 | MA-PD (HMO I-SNP) | New plan ID | Tier 1 | None | New plan ID in 2027 |
| Molina Medicare Complete Care (HMO D-SNP) | H4367-001-000 | MA-PD (HMO D-SNP) | New plan ID | Tier 2 | None | New plan ID in 2027 |
| Molina Medicare Complete Care (HMO D-SNP) | H4367-002-000 | MA-PD (HMO D-SNP) | New plan ID | Tier 2 | None | New plan ID in 2027 |
Data only, not plan advice. Confirm on Medicare.gov Plan Finder or 1-800-MEDICARE.
By dosage form
The 2027 formularies list potassium chloride by dosage form. A plan can cover one form and leave off or restrict another, so each form is counted on its own.
| Dosage form | Plans that list it | Restricted (of listing) | Most common tier |
|---|---|---|---|
| Effervescent oral tablet | 0 (0%) | none list it | none list it |
| Extended release oral capsule | 63 (98%) | 0 (0%) | Tier 2 |
| Extended release oral tablet | 64 (100%) | 0 (0%) | Tier 2 |
| Injectable solution | 56 (88%) | 0 (0%) | Tier 4 |
| Injection | 64 (100%) | 0 (0%) | Tier 4 |
| Oral capsule | 0 (0%) | none list it | none list it |
| Oral solution | 64 (100%) | 0 (0%) | Tier 4 |
| Oral tablet | 0 (0%) | none list it | none list it |
| Powder for oral solution | 54 (84%) | 0 (0%) | Tier 4 |
Iowa compared with the nation
0% of the 64 Part D plans offered in Iowa leave potassium chloride off the 2027 formulary or restrict it, against 1% nationally (1 point lower). Iowa is tied with 47 other states for rank 4 of 51, at 0% of plans restricting or leaving it off. A plan offered in several states counts in each.
Potassium chloride in every state and by parent organization
2027 compared with 2026
| Measure | 2026 | 2027 | Change |
|---|---|---|---|
| Part D plans in the file | 65 | 64 | -1 |
| Plans that list it | 65 (100%) | 64 (100%) | no change |
| Prior authorization (of plans that list it) | 0 (0%) | 0 (0%) | no change |
| Step therapy (of plans that list it) | 0 (0%) | 0 (0%) | no change |
| Quantity limit (of plans that list it) | 0 (0%) | 0 (0%) | no change |
| Any of the three (of plans that list it) | 0 (0%) | 0 (0%) | no change |
| Not listed or restricted (of all plans) | 0 (0%) | 0 (0%) | no change |
Formulary tier
| Tier | 2026 plans | 2027 plans |
|---|---|---|
| Tier 1 | 16 (25%) | 22 (34%) |
| Tier 2 | 48 (74%) | 42 (66%) |
| Tier 3 | 1 (2%) | 0 (0%) |
Plan by plan, 2026 to 2027
| Plan by plan | Plans |
|---|---|
| Same plan ID in both years | 47 |
| Listed it in 2026, not in 2027 | 0 (0%) |
| Listed it in 2027, not in 2026 | 0 (0%) |
| Moved it to a higher tier | 0 (0%) |
| Moved it to a lower tier | 5 (11%) |
| Added prior authorization | 0 (0%) |
| Added step therapy | 0 (0%) |
| Added a quantity limit | 0 (0%) |
| Added at least one of the three | 0 (0%) |
| Removed at least one of the three | 0 (0%) |
| Plan IDs new in 2027 | 17 |
| 2026 plan IDs not in the 2027 file | 19 |
The CMS summary has no count of tier moves down, so "Moved it to a lower tier" is counted from the plan rows on this page: plans with the same plan ID in both years that list potassium chloride both years.
Same plan ID in both years (47) plus 2026 plan IDs not in the 2027 file (19) add up to 66, not the 65 plans offered in Iowa in 2026, because some plans are offered in different states in 2026 and 2027. 1 plan ID counted in both years was offered only in other states in 2026.
Potassium chloride in other states
- Alabama0% restrict or leave off, no changeAL
- Alaska0% restrict or leave off, no changeAK
- Arizona0% restrict or leave off, no changeAZ
- Arkansas0% restrict or leave off, no changeAR
- California0% restrict or leave off, no changeCA
- Colorado0% restrict or leave off, no changeCO
- Connecticut0% restrict or leave off, no changeCT
- Delaware0% restrict or leave off, no changeDE
- District of Columbia0% restrict or leave off, no changeDC
- Florida1% restrict or leave off, no changeFL
- Georgia0% restrict or leave off, no changeGA
- Hawaii0% restrict or leave off, no changeHI
- Idaho0% restrict or leave off, no changeID
- Illinois0% restrict or leave off, no changeIL
- Indiana0% restrict or leave off, no changeIN
- Kansas0% restrict or leave off, no changeKS
- Kentucky0% restrict or leave off, no changeKY
- Louisiana0% restrict or leave off, no changeLA
- Maine0% restrict or leave off, no changeME
- Maryland0% restrict or leave off, no changeMD
- Massachusetts0% restrict or leave off, no changeMA
- Michigan0% restrict or leave off, no changeMI
- Minnesota0% restrict or leave off, no changeMN
- Mississippi0% restrict or leave off, no changeMS
- Missouri0% restrict or leave off, no changeMO
- Montana0% restrict or leave off, no changeMT
- Nebraska0% restrict or leave off, no changeNE
- Nevada10% restrict or leave off, +3 pointsNV
- New Hampshire0% restrict or leave off, no changeNH
- New Jersey0% restrict or leave off, no changeNJ
- New Mexico0% restrict or leave off, no changeNM
- New York0% restrict or leave off, no changeNY
- North Carolina0% restrict or leave off, no changeNC
- North Dakota0% restrict or leave off, no changeND
- Ohio0% restrict or leave off, no changeOH
- Oklahoma0% restrict or leave off, no changeOK
- Oregon0% restrict or leave off, no changeOR
- Pennsylvania0% restrict or leave off, no changePA
- Rhode Island0% restrict or leave off, no changeRI
- South Carolina0% restrict or leave off, no changeSC
- South Dakota0% restrict or leave off, no changeSD
- Tennessee0% restrict or leave off, no changeTN
- Texas3% restrict or leave off, no changeTX
- Utah0% restrict or leave off, no changeUT
- Vermont0% restrict or leave off, no changeVT
- Virginia0% restrict or leave off, no changeVA
- Washington0% restrict or leave off, no changeWA
- West Virginia0% restrict or leave off, no changeWV
- Wisconsin0% restrict or leave off, -1 pointWI
- Wyoming0% restrict or leave off, no changeWY
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 2026 Part D formulary file (basic drugs and plan information), as of September 30, 2026. Publisher page
Source: CMS CY2027 landscape file (states and parent organizations), as of September 30, 2026. Publisher page
Source: CMS CY2026 landscape file, as of September 25, 2025. Publisher page
Source: CMS Medicare Part D Spending by Drug, 2024 data, as of June 25, 2026. Publisher page
Source: US Census Bureau 2020 ZCTA to county relationship file (ZIP lookup), as of December 9, 2021. Publisher page