HCPCS Q4420: NuformMedicare rate & RVUs in Alaska
Report Q4420 for Nuform furnished by square centimeter as the product component of a wound application service.
Medicare pays $135.53 for Q4420 in the office in Alaska (Alaska*). Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What Q4420 covers
Q4420 identifies Nuform supplied for use in wound care, measured by square centimeter. It represents the product, not the clinician’s work to prepare the wound or apply the material. A physician or other qualified clinician may furnish and apply the product in an office wound clinic or hospital outpatient setting as part of a wound treatment procedure.
Report the product units supported by the record and pair the code with the applicable primary skin-substitute application procedure. The application code is selected according to the wound’s location and total surface area; documentation should identify Nuform and support the amount supplied or used. CMS classifies Q4420 as an add-on, so it is billed only with a primary procedure and its payment is within that procedure’s global period. It is also a technical-component-only code; the professional interpretation, when separately applicable, is represented by a separate code.
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.
Q4420 in Alaska*
| Payment locality | Office | Facility |
|---|---|---|
| Alaska* | $135.53 | Unavailable |
How the Q4420 rate is calculated
Each of Q4420’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · Q4420
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense3.81
3.81 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
3.8100
Conversion factor
$33.4009
Medicare rate
$127.26
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for Q4420
The CMS indicators that decide how Q4420 is paid alongside other services.
CMS payment indicators · Q4420
Nuform
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 3 | Technical component only. |
Q4420 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 15271Skin substitute graft
- 15271 reports the wound application procedure for qualifying trunk, arm, or leg sites; Q4420 reports the Nuform product furnished by square centimeter.
- 15273Skin substitute graft
- 15273 is the application procedure for its specified sites, including the face, hands, and feet. Q4420 identifies the product used, not the application service.
- Q4419Wound product
- Q4419 identifies Biolab Wrap Flow LT by square centimeter. Use the product code matching the material furnished rather than choosing between these codes by wound size.
- Q4421Skin substitute
- Q4421 identifies Biolab Wrap Solo by square centimeter; Q4420 identifies Nuform. The codes distinguish products, not different wound-area levels.
Q4420 billing questions
How is Q4420 different from a skin-substitute application code?
Q4420 identifies the Nuform product by square centimeter. The application code represents the procedure and is selected based on wound location and surface area.
Can Q4420 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure, with payment within that procedure’s global period.
What should the record support?
Document that Nuform was furnished and the amount in square centimeters used, along with the wound details supporting the primary application code.
Does Q4420 include the clinician’s professional work?
No. CMS classifies it as technical-component-only; a separate code represents interpretation when applicable.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
Fee sheets
Put Q4420 and the rest of your codes on one sheet
Build a fee sheet from your own code list at your locality, put your payer contracts beside Medicare, and see what changed each quarter.
Build my fee sheetOr price your code list free →