$161.53
15271 reports the application procedure for qualifying trunk, arm, or leg wounds; Q4124 reports the Oasis matrix product supplied with a primary procedure.
On this page
CMS RVU26D · Effective 2026-10-01
Q4124 Wound matrix Medicare reimbursement rates in Rhode Island
Reports Oasis tri-layer wound matrix supplied for wound treatment, alongside the primary procedure that applies the matrix to the wound. Compare Q4124 office and facility rates across CMS payment localities in Rhode Island.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for Q4124 in Rhode Island?
Rhode Island has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$131.46
1 of 1 localities have a supported rate.
Payment area: Rhode Island
One mapped payment locality.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Wound care products
About Q4124: Oasis tri-layer wound matrix supply
Reports Oasis tri-layer wound matrix supplied for wound treatment, alongside the primary procedure that applies the matrix to the wound.
Q4124 identifies the Oasis tri-layer wound matrix, a porcine small-intestinal-submucosa product applied to a prepared wound bed. Wound care clinicians, surgeons, and podiatrists may use it for wounds such as diabetic foot ulcers or venous leg ulcers when a matrix is selected as part of treatment. The product is generally supplied and applied in outpatient wound clinics, physician offices, or hospital outpatient departments.
Report the product code with the primary skin-substitute application procedure, using the product’s billed unit of measure, per square centimeter. Documentation should identify the Oasis tri-layer product, wound site, amount applied, and the associated application procedure. CMS classifies Q4124 as an add-on code: it is billed only with a primary procedure, and payment falls within that procedure’s global period. It is also technical-component-only; a separate code covers interpretation. Q4124 represents the product, not the clinician’s wound assessment or the application service.
CMS billing rules for Q4124
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
- Professional and technical components
- Technical-component-only code: a separate code covers interpretation.
Where the value comes from
- Work RVU0.00 · 0%
- Practice expense (office) RVU3.81 · 100%
- Malpractice RVU0.00 · 0%
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Q4124 compared with similar codes
Office rates for Rhode Island, from the same CMS release.
$131.46
Q4121 identifies TheraSkin. Use Q4124 only when Oasis tri-layer wound matrix is the product supplied.
$131.46
Q4122 identifies Dermacell AWM. The product documented and supplied determines whether Q4122 or Q4124 is reported.
Compare Q4124 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Rhode Island →
Office / nonfacility
$131.46
Facility
Unavailable
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for Q4124 in Rhode Island.
PPRRVU2026_Oct_nonQPP.csv
18,220
- Code
- Q4124
- Physician work
- 0.00
- Practice expense
- 3.81
- Malpractice
- 0.00
GPCI2026.csv
92
- Locality
- Rhode Island
- Physician work
- 1.019
- Practice expense
- 1.033
- Malpractice
- 0.892
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.019 | 0.0000 |
| Practice expense | 3.81 | × 1.033 | 3.9357 |
| Malpractice | 0.00 | × 0.892 | 0.0000 |
| Total RVUs | 3.9357 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Rhode Island$131.46
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0 | 1.019 |
| Practice expense | 3.81 | 1.033 |
| Malpractice | 0 | 0.892 |
(0 × 1.019 + 3.81 × 1.033 + 0 × 0.892) × $33.4009 = $131.46
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
Q4124 billing questions
Is Q4124 the wound application procedure?
No. Q4124 reports the Oasis tri-layer matrix product; report the applicable primary skin-substitute application procedure separately.
What unit is reported?
The unit is one square centimeter. Documentation should support the quantity of Oasis matrix supplied and applied.
Can Q4124 be billed by itself?
No. CMS identifies it as an add-on code billed only with a primary procedure, with payment within that procedure’s global period.
Does Q4124 include interpretation?
No. CMS classifies Q4124 as technical-component-only; a separate code covers interpretation.
How is Q4124 distinguished from another wound matrix code?
Select Q4124 when the documented product is Oasis tri-layer wound matrix. Other product-specific codes identify different matrices or skin substitutes.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
18,217Q4121,,Theraskin,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,218Q4122,,"Dermacell, awm, porous sq cm",A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,219Q4123,,Alloskin,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,220Q4124,,Oasis tri-layer wound matrix,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,221Q4125,,Arthroflex,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,222Q4126,,Memoderm/derma/tranz/integup,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,223Q4127,,Talymed,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8912502,PA,01,METROPOLITAN PHILADELPHIA,1.018,1.041,1.193
9012502,PA,99,REST OF PENNSYLVANIA,1.000,0.918,0.945
9109202,PR,20,PUERTO RICO,1.000,1.011,0.985
9214412,RI,01,RHODE ISLAND,1.019,1.033,0.892
9311202,SC,01,SOUTH CAROLINA,1.000,0.924,0.850
9403402,SD,02,SOUTH DAKOTA**,1.000,1.000,0.336
9510312,TN,35,TENNESSEE,1.000,0.909,0.537