Potassium chloride (Klor-Con) — 2026 Medicare Part D coverage
potassium chloride — sold as Klor-Con: 23 forms appear in Medicare Part D formularies for 2026. This page reports what plans filed with CMS; it does not recommend a plan.
Which plans in your county cover potassium chloride?
Pick a county to see every Medicare Advantage plan filed there and every stand-alone Part D plan in its region, with this drug's tier, restrictions and tier cost sharing.
How to read drug coverage
Tier is the cost-sharing tier the plan assigned the drug in its CMS formulary filing; lower tiers usually cost less. PA = prior authorization, ST = step therapy (try another drug first), QL = quantity limit. Not on formulary means the plan did not list this exact form; the plan may cover another strength or a formulary exception may be possible. Cost sharing is the plan's initial-coverage amount for the tier as filed with CMS; the deductible, the $2,100 annual out-of-pocket cap, the $35 insulin cap and negotiated prices for selected drugs can change what you actually pay. Formularies change during the year; the plan's formulary document and Medicare.gov govern.
What the star rating under each Medicare Advantage plan means
What the star rating means. CMS rates every Medicare Advantage contract (the "H" number in the plan ID — all plans under it share the rating) on a 1-to-5 scale each October, from about 40 measures of care quality, member experience, complaints and appeals, customer service and, for plans with drug coverage, drug safety and pricing. The 2026 rating is largely based on performance measured in 2024.
5 Excellent4 Above average3 Average2 Below average1 Poor
Not rated means CMS published no overall rating — usually a contract too new to be measured or with too few members ("not enough data"); it is not a low score. A 5-star contract can be joined outside the normal enrollment windows (the 5-star Special Enrollment Period, Dec 8 – Nov 30). Medicare.gov flags contracts rated below 3 stars for three years running as low-performing. Stars describe the contract's past performance as CMS measured it; they are not a recommendation, and they do not tell you whether a plan's network, drugs or costs fit you.
Forms and strengths in 2026 formularies
| Form | Formularies listing it | Most common tier | PA | ST | QL |
|---|---|---|---|---|---|
| potassium chloride 10 MEQ (750 MG) Extended Release Oral Tablet generic · RxCUI 628953 | 328 (100%) | 2 | 0 | 0 | 0 |
| potassium chloride 20 MEQ Extended Release Oral Tablet generic · RxCUI 198116 | 328 (100%) | 2 | 0 | 0 | 0 |
| potassium chloride 8 MEQ (600 MG) Extended Release Oral Tablet generic · RxCUI 312529 | 328 (100%) | 2 | 0 | 0 | 0 |
| potassium chloride 20 MEQ in 15 mL Oral Solution generic · RxCUI 312515 | 327 (100%) | 4 | 0 | 0 | 0 |
| potassium chloride 10 MEQ Microencapsulated Extended Release Oral Tablet generic · RxCUI 1801298 | 325 (99%) | 2 | 0 | 0 | 0 |
| potassium chloride 20 MEQ Microencapsulated Extended Release Oral Tablet generic · RxCUI 1801294 | 325 (99%) | 2 | 0 | 0 | 0 |
| potassium chloride 10 MEQ Extended Release Oral Capsule generic · RxCUI 312504 | 324 (99%) | 2 | 0 | 0 | 0 |
| potassium chloride 8 MEQ (600 MG) Extended Release Oral Capsule generic · RxCUI 315183 | 324 (99%) | 2 | 0 | 0 | 0 |
| potassium chloride 15 MEQ Microencapsulated Extended Release Oral Tablet generic · RxCUI 403888 | 321 (98%) | 2 | 0 | 0 | 0 |
| Klor-Con M10 10 MEQ Extended Release Oral Tablet brand · RxCUI 1801299 | 318 (97%) | 2 | 0 | 0 | 0 |
| Klor-Con M20 20 MEQ Extended Release Oral Tablet brand · RxCUI 1801295 | 318 (97%) | 2 | 0 | 0 | 0 |
| potassium chloride 40 MEQ in 15 mL Oral Solution generic · RxCUI 314182 | 315 (96%) | 4 | 0 | 0 | 0 |
| Klor-Con M15 15 MEQ Extended Release Oral Tablet brand · RxCUI 832731 | 313 (95%) | 2 | 0 | 0 | 0 |
| potassium chloride 2 MEQ/mL Injectable Solution generic · RxCUI 204520 | 305 (93%) | 2 | 4 | 0 | 0 |
| Klor-Con 8 MEQ Extended Release Oral Tablet brand · RxCUI 832718 | 262 (80%) | 2 | 0 | 0 | 0 |
| Klor-Con 10 MEQ Extended Release Oral Tablet brand · RxCUI 628958 | 261 (80%) | 2 | 0 | 0 | 0 |
| potassium chloride 40 MEQ in 20 ML Injection generic · RxCUI 1860139 | 254 (77%) | 4 | 6 | 0 | 0 |
| potassium chloride 20 MEQ (1.5 GM) Powder for Oral Solution generic · RxCUI 1867544 | 193 (59%) | 4 | 0 | 0 | 0 |
| Klor-Con 20 MEQ (1.5 GM) Powder for Oral Solution brand · RxCUI 1867547 | 180 (55%) | 4 | 0 | 0 | 0 |
| potassium chloride 15 MEQ (1125 MG) Extended Release Oral Tablet generic · RxCUI 2693253 | 175 (53%) | 2 | 0 | 0 | 0 |
| potassium chloride 10 MEQ in 100 ML Injection generic · RxCUI 312507 | 148 (45%) | 2 | 2 | 0 | 0 |
| potassium chloride 20 MEQ in 100 ML Injection generic · RxCUI 1860239 | 148 (45%) | 2 | 2 | 0 | 0 |
| potassium chloride 40 MEQ in 100 ML Injection generic · RxCUI 1860463 | 146 (45%) | 2 | 2 | 0 | 0 |
Counts are formularies (of 328) in the CMS file that list the form, and how many of those apply prior authorization (PA), step therapy (ST) or a quantity limit (QL). Many plans share one formulary, so plan counts in a county will differ.
How to read drug coverage
Tier is the cost-sharing tier the plan assigned the drug in its CMS formulary filing; lower tiers usually cost less. PA = prior authorization, ST = step therapy (try another drug first), QL = quantity limit. Not on formulary means the plan did not list this exact form; the plan may cover another strength or a formulary exception may be possible. Cost sharing is the plan's initial-coverage amount for the tier as filed with CMS; the deductible, the $2,100 annual out-of-pocket cap, the $35 insulin cap and negotiated prices for selected drugs can change what you actually pay. Formularies change during the year; the plan's formulary document and Medicare.gov govern.
What the star rating under each Medicare Advantage plan means
What the star rating means. CMS rates every Medicare Advantage contract (the "H" number in the plan ID — all plans under it share the rating) on a 1-to-5 scale each October, from about 40 measures of care quality, member experience, complaints and appeals, customer service and, for plans with drug coverage, drug safety and pricing. The 2026 rating is largely based on performance measured in 2024.
5 Excellent4 Above average3 Average2 Below average1 Poor
Not rated means CMS published no overall rating — usually a contract too new to be measured or with too few members ("not enough data"); it is not a low score. A 5-star contract can be joined outside the normal enrollment windows (the 5-star Special Enrollment Period, Dec 8 – Nov 30). Medicare.gov flags contracts rated below 3 stars for three years running as low-performing. Stars describe the contract's past performance as CMS measured it; they are not a recommendation, and they do not tell you whether a plan's network, drugs or costs fit you.