How Much Does Diltiazem Cost With Medicare?
Diltiazem (Diltiazem Hydrochloride) costs an average of $19 per Medicare Part D claim, with total Medicare spending of $123.0M in the latest year. A generic version is available, which may reduce out-of-pocket costs.
Key Facts: Diltiazem Cost
- Medicare Part D avg
- $19/claim
- Likely Part D tier
- Tier 1 (generic)
- Annual cost/patient
- $126
- Generic available
- Yes — Diltiazem Hydrochloride
- Manufacturer
- Various
- Treats
- Hypertension
- YoY price change
- -18.6%
Source: CMS Medicare Part D Spending Dashboard. Tier placement inferred from typical formulary norms — confirm with your specific Part D plan.
Diltiazem Medicare Coverage & Out-of-Pocket Cost
Diltiazem is covered under Medicare Part D, with the program paying an average of $19 per prescription fill. Diltiazem typically falls on Tier 1 (generic) of standard Part D formularies. Typical copay: $0-$10 per fill on most Medicare Part D plans.
Your actual out-of-pocket cost depends on three factors: (1) formulary tier — your plan's specific placement; (2) deductible status — most plans require you to meet up to a $590 deductible (2025) before copays kick in; (3) coverage phase — initial coverage, then the donut hole was eliminated in 2025, replaced by a hard $2,000 annual out-of-pocket cap under the Inflation Reduction Act. Once you hit $2,000 in true out-of-pocket spending, the rest of your Part D drugs are free for the year.
Because generic Diltiazem Hydrochloride is available, the single biggest savings move is asking your pharmacist about generic substitution. Generics typically sit on Tier 1 with copays under $10, vs Tier 2-3 placement for brand-name Diltiazem. Most states allow automatic substitution unless your prescriber writes "dispense as written."
For cash-pay or commercial insurance scenarios, compare prices using GoodRx, SingleCare, or Cost Plus Drugs before filling — discount-program prices sometimes beat Part D copays for lower-cost generics.
Diltiazem is manufactured by Various and prescribed primarily for Hypertension. In the most recent Medicare Part D data, 6,480,000 claims were filed for 980,000 unique beneficiaries, at an average cost of $19 per claim. Average annual cost per beneficiary is $126.
Year over year, Medicare spending on Diltiazem has decreased by -18.6%. Because a generic version of Diltiazem Hydrochloride is available, patients can often substitute to reduce out-of-pocket costs. Its patent expires 2023-01-31.
Key Data
| Metric | Value |
|---|---|
| Avg Cost Per Claim | $19 |
| Total Medicare Spending | $123.0M |
| Total Claims | 6,480,000 |
| Beneficiaries | 980,000 |
| Generic Available | Yes |
| Year-Over-Year Change | -18.6% |
Other Drugs for Hypertension
Frequently Asked Questions
Medicare Part D pays an average of $19 per claim for Diltiazem. Diltiazem is typically placed on Tier 1 (generic) of standard Part D formularies. Typical copay: $0-$10 per fill on most Medicare Part D plans. As of 2025, total annual out-of-pocket on Part D is capped at $2,000 under the Inflation Reduction Act.
Yes. Diltiazem appears in Medicare Part D claims data, with 980,000 beneficiaries filling 6,480,000 prescriptions in the latest year. Specific coverage depends on your plan's formulary — call the number on your insurance card or check the plan's Summary of Benefits to confirm prior authorization, step therapy, or quantity limit requirements.
Diltiazem (Diltiazem Hydrochloride) costs an average of $19 per Medicare Part D claim, with total Medicare spending of $123.0M in the latest year. A generic version is available, which may reduce out-of-pocket costs.
Yes. A generic version of Diltiazem Hydrochloride is available, which typically costs 80-95% less than brand-name Diltiazem. Ask your pharmacist about generic substitution — most state laws allow automatic substitution unless your prescriber writes "dispense as written."
Medicare beneficiaries cannot use manufacturer copay cards (anti-kickback statute), but several options exist: (1) Apply to charity copay foundations like the PAN Foundation, NeedyMeds, HealthWell Foundation, or Patient Advocate Foundation — many cover hypertension drugs; (2) Ask your prescriber about therapeutic alternatives in the same drug class that may be on a lower tier; (3) For some drugs, paying cash via GoodRx or Cost Plus Drugs can beat your Medicare copay — always compare before filling; (4) If your income is below 150% of the federal poverty level, you may qualify for the Medicare Extra Help (Low-Income Subsidy) program, which reduces Part D costs to near-zero.
Diltiazem is manufactured by Various. The FDA application number is BLA125057.
Diltiazem (Diltiazem Hydrochloride) is primarily prescribed for Hypertension.
Medicare Part D spending on Diltiazem has decreased -18.6% year over year. Total program spending reached $123.0M in the latest reporting year.
Diltiazem (Diltiazem Hydrochloride) costs an average of $19 per Medicare Part D claim, with total Medicare spending of $123.0M in the latest year. A generic version is available, which may reduce out-of-pocket costs.
This answer pulls from CMS Medicare Part D Drug Spending data, the authoritative federal source for U.S. Medicare prescription-drug pricing. The headline number above is the direct answer; what follows is the additional context most readers need to use the answer for a real decision rather than just a fact lookup.
For readers turning this answer into action: cross-reference against the underlying CMS Medicare Part D Drug Spending data record before acting on time-sensitive decisions. The site renders the data as it was published; subsequent revisions can shift the picture, and the live federal data is always the authoritative current reference.
Source: CMS Medicare Part D Spending, 2026.