Q4128 – Flex hd, or allopatch hd, per square centimeter (add-on, list separately in addition to primary procedure)
HCPCS Level II code · Q codes: Temporary Codes
HCPCS codeQ4128
- Long description
- Flex hd, or allopatch hd, per square centimeter (add-on, list separately in addition to primary procedure)
- Short description
- Flexhd/allopatchhd/sq cm
- Pricing indicator
11Priced using national RVUs (Physician Fee Schedule)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
O1EOther drugs- ASC
- Approved for ambulatory surgical centers
- Added
- January 1, 2012
- Last change
- January 1, 2026 – No change
Frequently asked questions
What is HCPCS code Q4128?
Q4128 is a HCPCS Level II code for flex hd, or allopatch hd, per square centimeter (add-on, list separately in addition to primary procedure).
Does Medicare cover Q4128?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby Q codes
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- Q4121 – Theraskin, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4122 – Dermacell, dermacell awm or dermacell awm porous, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4123 – Alloskin rt, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4124 – Oasis ultra tri-layer wound matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4125 – Arthroflex, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4126 – Memoderm, dermaspan, tranzgraft or integuply, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4127 – Talymed, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4129 – Unite biomatrix, per square centimeter
- Q4130 – Strattice tm, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4131 – Epifix or epicord, per square centimeter
- Q4132 – Grafix core and grafixpl core, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4133 – Grafix prime, grafixpl prime, stravix and stravixpl, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4134 – Hmatrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4135 – Mediskin, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4136 – Ez-derm, per square centimeter (add-on, list separately in addition to primary procedure)
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.