HCPCS code Q4387: Skin substitute, neothelium FT, per square centimeter2026 Medicare rate & RVUs

Medicare pays $127.26 for Q4387 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 Q4387 covers

Q4387 identifies the Neothelium FT product used as a skin substitute for wound coverage. Its unit basis is one square centimeter. It is associated with wound-care treatment in which a clinician applies a skin substitute to a prepared wound; the treating physician or other qualified practitioner documents the wound and directs the application. This code represents the product, not the wound-care evaluation or the work of applying it.

Report Q4387 only with the primary procedure for which the product is used; CMS treats it as an add-on paid within that procedure’s global period. The applicable application code depends on wound location and treated area, so the product code alone does not determine the primary procedure. Document the product identity, amount in square centimeters, wound site and dimensions, and related application procedure. Q4387 is technical-component-only, with interpretation 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 Q4387 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

Q4387 rates by state

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

How the Q4387 rate is calculated

Each of Q4387’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 Q4387

The CMS indicators that decide how Q4387 is paid alongside other services.

Q4387 compared with similar codes

How to choose

Q4388Wound productNeothelium 4L, per square centimeter

Q4388 identifies Neothelium 4L, while Q4387 identifies Neothelium FT. Match the reported code to the specific product furnished.

Q4389Wound matrixNeothelium 4L+

Q4389 identifies Neothelium 4L+, a different product variant from the Neothelium FT product represented by Q4387.

Q4377Skin substituteTrigraft, per sq cm

Q4377 identifies Trigraft FT rather than Neothelium FT. These codes distinguish products, even though both use a per-square-centimeter unit basis.

Codes related to Q4387

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