$116.44
Q4378 identifies Renew FT Matrix; Q4379 identifies AmnioDefend FT. Use the code matching the product furnished.
On this page
CMS RVU26D · Effective 2026-10-01
Q4379 Wound graft Medicare reimbursement rates in Iowa
Report AmnioDefend FT by square centimeter when the product is furnished for wound grafting and billed with a primary application procedure. Compare Q4379 office and facility rates across CMS payment localities in Iowa.
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 Q4379 in Iowa?
Iowa 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
$116.44
1 of 1 localities have a supported rate.
Payment area: Iowa
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.
Skin substitute supply
About Q4379: AmnioDefend FT wound graft supply
Report AmnioDefend FT by square centimeter when the product is furnished for wound grafting and billed with a primary application procedure.
Q4379 identifies the AmnioDefend FT wound graft product, reported by the square centimeter furnished. Wound-care clinicians and surgeons may use it during a procedure to cover a wound bed; the application service is reported separately under the appropriate primary procedure code. The product code identifies the material, not the clinician’s work in preparing the wound or applying the graft.
Report units based on the documented square centimeters of product furnished, and pair Q4379 with the primary procedure. The record should identify AmnioDefend FT, the wound site, the amount used, and the associated application procedure. CMS classifies Q4379 as an add-on code: it is billed only with a primary procedure and paid within that procedure’s global period. CMS also classifies it as technical-component-only; a separate code covers interpretation.
CMS billing rules for Q4379
- 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.
Q4379 compared with similar codes
Office rates for Iowa, from the same CMS release.
$116.44
Q4377 identifies Trigraft FT rather than AmnioDefend FT. The product name, not the shared per-square-centimeter unit, distinguishes the codes.
$116.44
Q4385 identifies Apollo FT. Report Q4379 only when AmnioDefend FT was furnished.
Compare Q4379 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
Iowa →
Office / nonfacility
$116.44
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 Q4379 in Iowa.
PPRRVU2026_Oct_nonQPP.csv
18,465
- Code
- Q4379
- Physician work
- 0.00
- Practice expense
- 3.81
- Malpractice
- 0.00
GPCI2026.csv
53
- Locality
- Iowa
- Physician work
- 1.000
- Practice expense
- 0.915
- Malpractice
- 0.397
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.000 | 0.0000 |
| Practice expense | 3.81 | × 0.915 | 3.4862 |
| Malpractice | 0.00 | × 0.397 | 0.0000 |
| Total RVUs | 3.4862 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Iowa$116.44
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0 | 1 |
| Practice expense | 3.81 | 0.915 |
| Malpractice | 0 | 0.397 |
(0 × 1 + 3.81 × 0.915 + 0 × 0.397) × $33.4009 = $116.44
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.
Q4379 billing questions
Can Q4379 be billed by itself?
No. CMS identifies Q4379 as an add-on code that must be billed with a primary procedure.
How should the units be determined?
Report the square centimeters of AmnioDefend FT furnished, supported by the product amount and wound documentation.
Which procedure is billed with Q4379?
Pair it with the primary wound-graft application procedure appropriate to the wound site and treated area, such as CPT 15271 when applicable.
Does Q4379 include interpretation?
No. CMS classifies Q4379 as technical-component-only and identifies a separate code for interpretation.
What documentation supports Q4379?
Document the product as AmnioDefend FT, the wound site, the square centimeters furnished, and the primary application procedure.
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.
18,462Q4376,,Duograft aa 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
18,463Q4377,,Trigraft 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
18,464Q4378,,Renew ft matrix 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
18,465Q4379,,Amniodefend 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
18,466Q4380,,Advograft one 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
18,467Q4382,,Advograft dual 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
18,468Q4383,,Axolotl graft ult 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
5006102,IL,15,SUBURBAN CHICAGO,1.007,1.027,1.772
5106102,IL,99,REST OF ILLINOIS,1.000,0.913,1.563
5208102,IN,00,INDIANA,1.000,0.927,0.486
5305102,IA,00,IOWA,1.000,0.915,0.397
5405202,KS,00,KANSAS,1.000,0.904,0.504
5515102,KY,00,KENTUCKY,1.000,0.889,0.915
5607202,LA,01,NEW ORLEANS,1.000,0.941,1.136