Q4118: Matristem micromatrix, 1 mg
Q4118 is a HCPCS Level II code for matristem micromatrix, 1 mg. It belongs to the Temporary Codes section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q4-Oct. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusC
Contractor-priced. Your MAC establishes the RVUs and the payment amount case by case, usually after reviewing documentation. There is no national amount to compute.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for Q4118
- Long descriptor
- Matristem micromatrix, 1 mg
- Short descriptor
- Matristem micromatrix
- Added
- January 1, 2011
- BETOS
- O1E
- Pricing indicator
- 13: Physician fee schedule
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.
Price established by carriers, not otherwise classified, individual determination, or carrier discretion.
Codes adjacent to Q4118
HCPCS has no hierarchy: related items simply sit next to each other in the numbering. If Q4118 is not quite right, the correct code is very often within a few positions of it.
- Q4110Primatrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4111Gammagraft, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4112Cymetra, injectable, 1 cc
- Q4113Graftjacket xpress, injectable, 1 cc
- Q4114Integra flowable wound matrix, injectable, 1 cc
- Q4115Alloskin, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4116Alloderm, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4117Hyalomatrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4119Matristem wound matrix, per square centimeterterminated
- Q4120Matristem burn matrix, per square centimeterterminated
- Q4121Theraskin, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4122Dermacell, dermacell awm or dermacell awm porous, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4123Alloskin rt, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4124Oasis ultra tri-layer wound matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4125Arthroflex, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4126Memoderm, dermaspan, tranzgraft or integuply, per square centimeter (add-on, list separately in addition to primary procedure)