Why is the comparison with Medicare for SEROSTIM 5 MG VIAL labelled estimated?

Beyond what the card shows, the records give these reasons: The Part D figure covers 2024-01-01 to 2024-12-31; the NADAC price is from the file of 2026-10-14. Part D spending basis, as the Part D record states it: Part D 2024 average spend per dosage unit for Serostim / Somatropin: all makers, strengths, forms and routes combined, claim-weighted; gross cost incl. dispensing fees and patient pay, before rebates. Unit taken as NADAC's EA. Joined on brand name.

Why does this page start at 1 unit (EA)?

NADAC prices this product per EA. The FDA NDC Directory does not list its NDC, and its NADAC name (“SEROSTIM 5 MG VIAL”) says “VIAL”, and only an oral tablet or capsule (or a tablet or film taken under the tongue or against the cheek) starts at 30. NADAC’s EA for it may be a whole package (such as a kit, pen, syringe, vial or inhaler) or one dose inside it, and the files do not say which. So the card starts at 1 unit (EA) rather than guess how many make up a fill; change it to match your prescription.

SEROSTIM 5 MG VIAL

For 1 unit (EA)

Pharmacies pay

$278.60 filed

1 × $278.604 per EA

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D paid

$684.07 filed

1 × $684.06663 per EA, Part D average

Medicare's price is not your price.

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18

The spread

2.5× estimated

Medicare paid 2.5× what pharmacies pay.

Part D averages every strength and form sold under “Serostim” / “Somatropin” into one figure, so it is not specific to this NDC.

OpenBill calculation · DSD_PTD_RY26_P04_V10_DY24_BGM.csv + nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17) · Part D 2024-01-01 to 2024-12-31 (file of 2026-06-25, retrieved 2026-10-18)

Cost-plus estimate

$325.39 estimated

$278.60 + $41.79 (15%) + $5.00 fee per fill = $325.39

This is a model, not a price any pharmacy quoted. Shipping is not included. How it is worked out

OpenBill calculation · nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17)

Open the interactive card Change the quantity, type what you were charged, and see every record in full.

What it is

SEROSTIM 5 MG VIAL is how the CMS NADAC file names this product. The FDA NDC Directory does not list its NDC as a package of its own, so OpenBill has no FDA names, dosage form or pharmacologic class for it.

The NADAC file of 2026-10-14 prices it under one NDC (National Drug Code), 44087-0005-01.

NADAC classes it as a brand-name drug (rate-setting class B), and does not mark it as sold over the counter.

What pharmacies pay

Pharmacies pay $278.60 for 1 unit (EA) (1 × $278.604 per EA, rounded to the cent), by the CMS NADAC file of 2026-10-14; that price took effect on 2026-09-23. That is what pharmacies pay their suppliers, not what they charge you.

NADAC’s explanation codes for it: 1, calculated from the most recently completed pharmacy survey; 5, calculated based on package size.

What NADAC measures · NADAC explanation codes

The NDC

44087-0005-01 · not listed as a package in the FDA directory · $278.604 per EA · eff. 2026-09-23 filed

What Medicare paid

Medicare Part D paid $684.07 for 1 unit (EA), at an average of $684.06663 per EA in 2024 (2024-01-01 to 2024-12-31) for “Serostim” and “Somatropin”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).

That average covers 5,396 Part D claims (fills, including refills) for 2024-01-01 to 2024-12-31, across every maker, strength and form under the name.

Medicare's price is not your price.

What Part D spending measures · Which Medicare figure OpenBill compares · How the spread is worked out

What to ask at the counter

None of these figures is your price: what you pay depends on your pharmacy, your insurance, coupons and discounts.

What is your cash price for 1 unit (EA)? Is it lower than what I would pay through my insurance?
If you have Medicare Part D: what is my plan’s copay or coinsurance for it? The Part D average on this page is not what you pay.
These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.

Questions

Why is the comparison with Medicare for SEROSTIM 5 MG VIAL labelled estimated?: Beyond what the card shows, the records give these reasons: The Part D figure covers 2024-01-01 to 2024-12-31; the NADAC price is from the file of 2026-10-14. Part D spending basis, as the Part D record states it: Part D 2024 average spend per dosage unit for Serostim / Somatropin: all makers, strengths, forms and routes combined, claim-weighted; gross cost incl. dispensing fees and patient pay, before rebates. Unit taken as NADAC's EA. Joined on brand name.
Why does this page start at 1 unit (EA)?: NADAC prices this product per EA. The FDA NDC Directory does not list its NDC, and its NADAC name (“SEROSTIM 5 MG VIAL”) says “VIAL”, and only an oral tablet or capsule (or a tablet or film taken under the tongue or against the cheek) starts at 30. NADAC’s EA for it may be a whole package (such as a kit, pen, syringe, vial or inhaler) or one dose inside it, and the files do not say which. So the card starts at 1 unit (EA) rather than guess how many make up a fill; change it to match your prescription.