HCPCS code Q4420: Nuform2026 Medicare rate & RVUs

Medicare pays $127.26 for Q4420 nationally in the office. Local office rates run $109.31–$183.51.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

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.

Where Q4420 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

Q4420 rates by state

Office rate range in each state. Select a state to see its payment localities.

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.

Payment rules and modifiers for Q4420

The CMS indicators that decide how Q4420 is paid alongside other services.

Q4420 compared with similar codes

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.

Codes related to Q4420

Related codes aren’t interchangeable: bill the code that matches the service performed.

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

Open CMS sourceHow we calculate rates