Q3028 — Injection, interferon beta-1a, 1 mcg for subcutaneous use
Q3028 is a HCPCS Level II code for injection, interferon beta-1a, 1 mcg for subcutaneous use. It belongs to the Temporary Codes section. Medicare does not pay it — see the coverage note below before you bill it.
Medicare coverage: Not payable by Medicare
Medicare does not pay this code. It may still be valid for another payer, but a Medicare claim carrying it will not be reimbursed.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusI
Not valid for Medicare purposes. Medicare uses another code.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of Q3028 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for Q3028
- Long descriptor
- Injection, interferon beta-1a, 1 mcg for subcutaneous use
- Short descriptor
- Inj beta interferon sq 1 mcg
- Added
- January 1, 2014
- BETOS
- O1E
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to Q3028
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If Q3028 is not quite right, the correct code is very often within a few positions of it.
- Q2054Lisocabtagene maraleucel, up to 110 million autologous anti-cd19 car-positive viable t cells, including leukapheresis and dose preparation procedures, per therapeutic dose
- Q2055Idecabtagene vicleucel, up to 510 million autologous b-cell maturation antigen (bcma) directed car-positive t cells, including leukapheresis and dose preparation procedures, per therapeutic dose
- Q2056Ciltacabtagene autoleucel, up to 100 million autologous b-cell maturation antigen (bcma) directed car-positive t cells, including leukapheresis and dose preparation procedures, per therapeutic dose
- Q2057Afamitresgene autoleucel, including leukapheresis and dose preparation procedures, per therapeutic dose
- Q2058Obecabtagene autoleucel, 10 up to 400 million cd19 car-positive viable t cells, including leukapheresis and dose preparation procedures, per infusion
- Q3001Radioelements for brachytherapy, any type, each
- Q3014Telehealth originating site facility fee
- Q3027Injection, interferon beta-1a, 1 mcg for intramuscular use
- Q3031Collagen skin test
- Q4001Casting supplies, body cast adult, with or without head, plaster
- Q4002Cast supplies, body cast adult, with or without head, fiberglass
- Q4003Cast supplies, shoulder cast, adult (11 years +), plaster
- Q4004Cast supplies, shoulder cast, adult (11 years +), fiberglass
- Q4005Cast supplies, long arm cast, adult (11 years +), plaster
- Q4006Cast supplies, long arm cast, adult (11 years +), fiberglass
- Q4007Cast supplies, long arm cast, pediatric (0-10 years), plaster
Questions about Q3028
What is HCPCS code Q3028?
Q3028 is a HCPCS Level II code for injection, interferon beta-1a, 1 mcg for subcutaneous use. It sits in the Temporary Codes section.
Does Medicare cover Q3028?
The CMS HCPCS file marks Q3028 as "Not payable by Medicare". Medicare does not pay this code. It may still be valid for another payer, but a Medicare claim carrying it will not be reimbursed.
How is Q3028 paid under the physician fee schedule?
Q3028 carries PFS status code I. Not valid for Medicare purposes. Medicare uses another code.