$137.06
Q4421 identifies Biolab Wrap Solo; Q4423 identifies Biolab Tri Wrap FL. Match the reported code to the product documented as used.
On this page
CMS RVU26D · Effective 2026-10-01
Q4423 Skin substitute Medicare reimbursement rates in Connecticut
Q4423 reports the per-square-centimeter amount of Biolab Tri Wrap FL supplied for wound treatment, alongside a primary procedure. Compare Q4423 office and facility rates across CMS payment localities in Connecticut.
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 Q4423 in Connecticut?
Connecticut 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
$137.06
1 of 1 localities have a supported rate.
Payment area: Connecticut
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
About Q4423: Biolab Tri Wrap FL wound product
Q4423 reports the per-square-centimeter amount of Biolab Tri Wrap FL supplied for wound treatment, alongside a primary procedure.
Q4423 identifies Biolab Tri Wrap FL, a wound-care skin substitute product reported by the square centimeter. Wound-care clinicians, podiatrists, and surgeons may use it when treating wounds such as diabetic foot ulcers or venous leg ulcers. The code represents the product quantity, not the work of assessing or preparing the wound or applying the product.
Report Q4423 only with a primary procedure; CMS treats it as an add-on and pays it within that procedure’s global period. Documentation should identify the product and support the square-centimeter quantity reported, such as with wound measurements and the amount applied. CMS classifies this as a technical-component-only code; a separate code covers interpretation.
CMS billing rules for Q4423
- 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.
Q4423 compared with similar codes
Office rates for Connecticut, from the same CMS release.
$137.06
Q4418 is Biolab Wrap Flow, not Tri Wrap FL. These are distinct product codes, each reported by the square centimeter.
$137.06
Q4419 identifies Biolab Wrap Flow LT. Use Q4423 only when the product is Tri Wrap FL.
Compare Q4423 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
Connecticut →
Office / nonfacility
$137.06
Facility
Unavailable
Need rates for a whole code list?
Fee-sheet and API access are in early access. Tell us which codes and locations your team needs.
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 Q4423 in Connecticut.
PPRRVU2026_Oct_nonQPP.csv
18,508
- Code
- Q4423
- Physician work
- 0.00
- Practice expense
- 3.81
- Malpractice
- 0.00
GPCI2026.csv
38
- Locality
- Connecticut
- Physician work
- 1.020
- Practice expense
- 1.077
- Malpractice
- 1.210
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.020 | 0.0000 |
| Practice expense | 3.81 | × 1.077 | 4.1034 |
| Malpractice | 0.00 | × 1.210 | 0.0000 |
| Total RVUs | 4.1034 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Connecticut$137.06
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0 | 1.02 |
| Practice expense | 3.81 | 1.077 |
| Malpractice | 0 | 1.21 |
(0 × 1.02 + 3.81 × 1.077 + 0 × 1.21) × $33.4009 = $137.06
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.
Q4423 billing questions
How is Q4423 different from Q4421?
Q4423 identifies Biolab Tri Wrap FL, while Q4421 identifies Biolab Wrap Solo. Select the code matching the product used, rather than choosing by wound size or treatment site.
Can Q4423 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure and is paid within that procedure’s global period.
How many units should be reported?
The descriptor is per square centimeter. The record should support the quantity reported with the area treated and the amount of product applied.
Does Q4423 include the wound application procedure?
Q4423 identifies the product quantity, while CMS requires it to accompany a primary procedure. The record should support both the product reported and the primary service.
Is interpretation included in Q4423?
CMS classifies Q4423 as technical-component-only and specifies that a separate code covers interpretation.
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.
18,505Q4420,,Nuform per 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
18,506Q4421,,Biolab wrap solo per 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
18,507Q4422,,Ac wrap per 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
18,508Q4423,,Biolab tri wrap fl per 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
18,509Q4424,,Revive ft per 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
18,510Q4425,,Revive tl per 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
18,511Q4426,,"Dermbnd tl+, tlx per 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
3501112,CA,70,YUBA CITY,1.017,1.096,0.536
3601112,CA,75,REST OF CALIFORNIA,1.017,1.096,0.536
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899
4109102,FL,03,FORT LAUDERDALE,1.000,1.013,1.808