Specialty Drug


FILGRASTIM, G-CSF (fil GRA stim) is a granulocyte colony-stimulating factor that stimulates the growth of neutrophils, a type of white blood cell (WBC) important in the body's fight against infection. It is used to reduce the incidence of fever and infection in patients with certain types of cancer who are receiving chemotherapy that affects the bone marrow, to stimulate blood cell production for removal of WBCs from the body prior to a bone marrow transplantation, to reduce the incidence of fever and infection in patients who have severe chronic neutropenia, and to improve survival outcomes following high-dose radiation exposure that is toxic to the bone marrow. Compare leukocyte growth factors.

Zarxio Medicare Coverage


Does Medicare cover Zarxio?

56% of Medicare Part D and Medicare Advantage plans cover this drug, so it's pretty much a toss-up.

How much is my Zarxio co-pay with Medicare?

It depends. Which coverage stage are you in? Click on a tab below…

Donut Hole
Post-Donut Hole
Co-Pay Range
$558 – $1585
In the Deductible co-pay stage, you are responsible for the full cost of your prescriptions. Your Medicare deductible cannot exceed $360 in 2016.
Co-Pay Range
$140 – $1585
In the Typical co-pay stage, your deductible has been satisfied, and Medicare pays the majority of your drug costs.
Co-Pay Range
$248 – $1585
In the Donut Hole (also called the Coverage Gap) stage, you’ll pay more for your prescriptions. In 2016, the Donut Hole begins once you’ve spent $3,310 in one year.
Co-Pay Range
$15 – $1585
In the Post-Donut Hole (also called Catastrophic Coverage) stage, Medicare will cover most of your drug costs. In 2016, this stage begins once you have spent $4,850.
Want an exact price for your co-pay?

Ways to Save on Zarxio

Here are some ways that may lower the cost of your Zarxio prescription.

Patient Assistance Program
Receive your prescription at no charge if you are eligible.
Patient Assistance Program
Call to get more information on how they can financially assist you with your prescription.

Find Your Zarxio Medicare Co-Pay

Here are average co-pays for some of the most popular Medicare plans. Be sure to add your plan to see your specific co-pay. If a price is shown in red, GoodRx has found discount prices that are lower than your Medicare co-pay.

Average Co-Pay for 5 syringes (0.5ml) of Zarxio 300mcg

Medicare Plan Name Average Co-Pay
AARP MedicareComplete (HMO) $156
AARP MedicareComplete Plan 1 (HMO) $164
AARP MedicareComplete SecureHorizons (HMO) $151
AARP MedicareRx Preferred (PDP) $182
AARP MedicareRx Saver Plus (PDP) $143
Aetna Medicare Rx Saver (PDP)Lower price available $1585
Cigna-HealthSpring Preferred (HMO) $177
Cigna-HealthSpring Rx Secure (PDP) $141
Cigna-HealthSpring Rx Secure-Extra (PDP) $152
EnvisionRxPlus Silver (PDP) $140
Express Scripts Medicare - Value (PDP)Lower price available $1585
First Health Part D Value Plus (PDP)Lower price available $1585
Humana Enhanced (PDP) $187
Humana Preferred Rx Plan (PDP) $142
Humana Walmart Rx Plan (PDP) $142
Kaiser Permanente Senior Advantage (HMO) $191
MedicareBlue Rx Standard (PDP)Lower price available $1585
SilverScript Choice (PDP)Lower price available $1585
Symphonix Value Rx (PDP) $143
WellCare Classic (PDP)Lower price available $1585
Don't see your Medicare plan above?

Find and configure your plan to see exact co-pay prices for your meds.

Zarxio Medicare Formulary Information & Restrictions

Are there any restrictions on coverage?

Some Medicare plans have restrictions on coverage of Zarxio that may include:

Prior Authorization

Most Medicare plans will require you to obtain their authorization before they will provide coverage for this prescription. You’ll need to contact your plan and they may require you to have your doctor fill out paperwork indicating why you need this prescription. If you do not receive authorization or don’t want to go through this process, you may want to consider using a GoodRx discount instead of Medicare to find the best price for this prescription.

What drug tier is Zarxio typically on?

Tier 5

Medicare plans typically list Zarxio in Tier 5 of their formulary. Tier 5 drugs are usually non-preferred brand-name drugs. Tier 5 drugs cost more than Tier 1, 2, 3 and 4 drugs.

Does your plan have restrictions?

See discount prices that can save you money when your Medicare plan doesn't work for you.

Medicare prices are provided by the Centers for Medicare and Medicaid Services (CMS). If you encounter any issues, please let us know.
GoodRx is not sponsored by or affiliated with any of the pharmacies identified in its price comparisons. All trademarks, brands, logos and copyright images are property of their respective owners and rights holders and are used solely to represent the products of these rights holders. This information is for informational purposes only and is not meant to be a substitute for professional medical advice, diagnosis or treatment. GoodRx is not offering advice, recommending or endorsing any specific prescription drug, pharmacy or other information on the site. GoodRx provides no warranty for any of the pricing data or other information. Please seek medical advice before starting, changing or terminating any medical treatment.