HCPCS Q4380: Wound graftMedicare rate & RVUs in Guam
Reports each square centimeter of single Advograft supplied for wound coverage, alongside the primary procedure that applies the product.
Medicare pays $144.69 for Q4380 in the office in Guam (Hawaii, Guam). 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 Q4380 covers
Q4380 identifies the single Advograft wound product by the square centimeter supplied. It represents the product, not the clinician’s work to prepare the wound or apply the graft. Wound care clinicians and surgeons may use the product when treating wounds that require graft coverage; the clinical record should identify the product and the wound treated.
Report units based on the documented square centimeters of Advograft supplied, and bill the code only with a primary procedure. CMS treats Q4380 as an add-on paid within the primary procedure’s global period. The application service is reported separately under the appropriate primary procedure code. CMS classifies Q4380 as technical-component-only; a separate code covers interpretation. Documentation should support the product used, the quantity supplied, and the associated primary procedure.
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.
Q4380 in Hawaii, Guam
| Payment locality | Office | Facility |
|---|---|---|
| Hawaii, Guam | $144.69 | Unavailable |
How the Q4380 rate is calculated
Each of Q4380’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 · Q4380
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 0.00Practice expense 3.81Malpractice 0.00
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for Q4380
The CMS indicators that decide how Q4380 is paid alongside other services.
CMS payment indicators · Q4380
Wound graft
| 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. |
Q4380 compared with similar codes
Compare codes
Q4380 vs Q4382 vs Q4367 vs 15271: national Medicare rates
Swap in your local Medicare rate.
How to choose
- Q4382Skin substitute
- Q4382 identifies Advograft dual; Q4380 identifies the single Advograft product. Use the code matching the product supplied.
- Q4367Amniotic tissue product
- Q4367 identifies Amniocore SL rather than Advograft. These are distinct product-specific supply codes, not interchangeable descriptions.
- 15271Skin substitute graft
- 15271 reports the wound application procedure for its covered sites and area range; Q4380 reports the Advograft product supplied with a primary procedure.
Q4380 billing questions
How is Q4380 different from Q4382?
Both identify Advograft by the square centimeter, but Q4380 is the single-product version and Q4382 identifies Advograft dual. Match the billed code to the product actually supplied.
Does Q4380 include the wound application?
No. Q4380 identifies the product supplied. Report the wound application under the appropriate primary procedure code.
Can Q4380 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure, and payment falls within that procedure’s global period.
How many units should be reported?
Report the documented square centimeters of Advograft supplied. The record should support the product and the quantity.
Does Q4380 include professional interpretation?
No. CMS classifies it as technical-component-only; a separate code covers interpretation.
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
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