HCPCS code Q4373: Membrane graft, wrap LT, per square centimeter2026 Medicare rate & RVUs

Medicare pays $127.26 for Q4373 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 Q4373 covers

Q4373 identifies the Membrane Wrap LT wound-covering product, reported by the square centimeter supplied for application to a wound. It represents the product, not the clinician’s wound-bed preparation or placement work. A wound-care practitioner may use it in an outpatient office or hospital setting to cover a prepared wound, such as a chronic ulcer. The product name in the clinical and supply records should support choosing Q4373 rather than a code for a different membrane or skin substitute.

Report the product quantity in square-centimeter units with the applicable primary wound-treatment procedure. Documentation should identify the product, treated site, wound dimensions or area, and quantity applied. CMS classifies Q4373 as an add-on paid within the primary procedure’s global period, so it is not paid as a stand-alone service. It is technical-component-only; a separate code covers interpretation. Report the practitioner’s placement work under the appropriate application service, not as part of this product 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 Q4373 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

Q4373 rates by state

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

How the Q4373 rate is calculated

Each of Q4373’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 Q4373

The CMS indicators that decide how Q4373 is paid alongside other services.

Q4373 compared with similar codes

How to choose

Q4372AmchoPlast EXCLPer square centimeter

Q4372 identifies Amchoplast Excl; use Q4373 for Membrane Wrap LT. Select the product code from the specific product documented, not merely the wound site.

Q4375Wound graftDuograft AC, per square centimeter

Q4375 identifies Duograft AC, a different named product. Q4373 is specific to Membrane Wrap LT.

Q4371Wound productNeoguard, per square centimeter

Q4371 identifies Neoguard. Do not substitute it for Q4373 when the product record identifies Membrane Wrap LT.

Codes related to Q4373

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