Pirfenidone — Medicare Part D spending
Multiple manufacturers (9) · Rank #265 by total Part D spend · CMS data year 2023
Medicare Part D spent $172,753,686 on Pirfenidone in 2023, the #265 drug by total Part D spending out of 3,598 drugs. That worked out to about $25.10 per dosage unit, $3,542 per claim and $22,216 per beneficiary, across 48,775 claims for 7,776 beneficiaries. Average spending per dosage unit fell -37.8% from 2022. These are aggregate Medicare program figures (gross drug cost), not the price you pay.
Source: CMS Medicare Part D Spending by Drug (data year 2023). Data as of June 2026.
Pirfenidone spending at a glance (2023)
| Metric | Pirfenidone |
|---|---|
| Total Part D spending (2023) | $172,753,686 |
| Total spending (2022) | $136,829,839 |
| Year-over-year change in total spending | +26.3% |
| Average spending per dosage unit (2023) | $25.10 |
| Change in spend per dosage unit (YoY) | -37.8% |
| Avg annual change per dosage unit (2019-2023 CAGR) | -37.8% |
| Average spending per claim (2023) | $3,542 |
| Average spending per beneficiary (2023) | $22,216 |
| Total claims (2023) | 48,775 |
| Beneficiaries (2023) | 7,776 |
| Total dosage units (2023) | 8,382,942 |
| Manufacturer(s) | Multiple manufacturers (9) |
| National rank by total spend (of 3,598 drugs) | #265 |
Source: CMS Medicare Part D Spending by Drug (data year 2023). Data as of June 2026.
2022 vs 2023
| Metric | 2022 | 2023 | Change |
|---|---|---|---|
| Total spending | $136,829,839 | $172,753,686 | +26.3% |
| Avg spend per dosage unit | $40.35 | $25.10 | -37.8% |
| Avg spend per claim | $5,754 | $3,542 | — |
| Avg spend per beneficiary | $25,783 | $22,216 | — |
| Total claims | 23,780 | 48,775 | — |
| Beneficiaries | 5,307 | 7,776 | — |
How Pirfenidone compares with nearby drugs
Drugs with total Part D spending closest to Pirfenidone:
| Drug (rank) | Total spend 2023 | Per dosage unit | Per-unit YoY |
|---|---|---|---|
| Pirfenidone (this drug, #265) | $172,753,686 | $25.10 | -37.8% |
| Simvastatin (#263) | $172,937,895 | $0.14 | +20.9% |
| Fasenra Pen (Benralizumab) (#264) | $172,931,998 | $5,836.92 | +4.0% |
| Esomeprazole Magnesium (#266) | $172,016,821 | $0.96 | -29.8% |
| Escitalopram Oxalate (#267) | $171,914,954 | $0.25 | -3.2% |
| Levetiracetam* (Levetiracetam) (#268) | $171,482,383 | $0.33 | -4.5% |
Frequently asked questions
How much does Medicare Part D spend on Pirfenidone?
Medicare Part D spent $172,753,686 on Pirfenidone in 2023 (the latest CMS data year), across 48,775 claims for 7,776 beneficiaries. That ranks #265 of 3,598 drugs by total Part D spending. This is gross drug cost (Medicare, plan and beneficiary payments combined), not the price you personally pay.
What is the average spending per dosage unit for Pirfenidone?
In 2023, the weighted average Medicare Part D spending per dosage unit for Pirfenidone was $25.10. Compared with 2022 it fell -37.8%. A "dosage unit" is one pill, tablet, milliliter or other billing unit, so this is not the price of a prescription.
Who makes Pirfenidone?
CMS attributes Pirfenidone to Multiple manufacturers (9) in the 2023 Part D spending file. Average spending per claim was $3,542 and per beneficiary $22,216.
Is the Pirfenidone figure the price I pay?
No. These are aggregate Medicare Part D program figures (total gross drug cost and averages across all claims), published by CMS for transparency. Your out-of-pocket cost depends on your plan, formulary, deductible and coverage phase. Always check your plan and talk to your pharmacist or doctor.
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Source & what this means
Figures are from the CMS Medicare Part D Spending by Drug dataset (data year 2023, US public domain). "Total spending" is the gross drug cost — Medicare, plan and beneficiary payments combined — for Part D claims; it is not a list price, a negotiated price, or what any individual pays. Spending per dosage unit is volume-weighted across formulations. This is general public-spending information, not medical or pricing advice. Your own cost depends on your plan, deductible and coverage phase — verify with your Part D plan and a pharmacist. Data as of June 2026. See our methodology and disclaimer.
Last updated: 2026-06-20