HCPCS code Q4376: Wound graft, duoGraft AA, per square centimeter2026 Medicare rate & RVUs

Medicare pays $127.26 for Q4376 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 Q4376 covers

Q4376 represents the DuoGraft AA wound-graft product by the square centimeter, rather than the clinician’s work applying it. It is reported when this specific product is placed on a wound during a graft application, such as treatment of a chronic wound. Wound-care clinicians, surgeons, and podiatrists may use the product in outpatient clinics or hospital outpatient departments. Select the code by the product used, not by the wound diagnosis alone.

Report the square centimeters of DuoGraft AA represented by the units, supported by documentation of the product identity, treated site, and area applied. Q4376 is an add-on code: submit it only with a primary procedure, and CMS pays it within that procedure’s global period. CMS classifies the code as technical-component-only, with interpretation covered by a separate code. Pair it with the applicable skin-substitute application procedure; that procedure is selected according to the wound site and treated area.

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 Q4376 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

Q4376 rates by state

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

How the Q4376 rate is calculated

Each of Q4376’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 Q4376

The CMS indicators that decide how Q4376 is paid alongside other services.

Q4376 compared with similar codes

How to choose

Q4375Wound graftDuograft AC, per square centimeter

Q4375 identifies DuoGraft AC, while Q4376 identifies DuoGraft AA. Use the product code that matches the documented graft supplied.

Q4377Skin substituteTrigraft, per sq cm

Q4377 identifies Trigraft FT, a different wound-graft product. It is not interchangeable with DuoGraft AA based only on wound site or diagnosis.

15271Skin substitute graftFirst 25 cm², trunk/limbs

CPT 15271 reports the qualifying application procedure for a trunk or limb wound; Q4376 identifies the DuoGraft AA product used with a primary procedure.

Codes related to Q4376

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