HCPCS code Q4372: AmchoPlast EXCL, per square centimeter2026 Medicare rate & RVUs in Missouri
Reports AmchoPlast EXCL wound-matrix product by square centimeter when supplied for application during a qualifying primary wound procedure.
Medicare pays $109.70–$121.15 for Q4372 in the office in Missouri, from Rest of Missouri to Metropolitan St. Louis, MO. 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.
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On this page 9 sections
What Q4372 covers
Q4372 identifies the AmchoPlast EXCL product supplied for use as a biologic wound-covering matrix. It represents the product, not the clinician’s work applying it. Wound-care clinicians may use the material during a procedure for a selected wound; the code is reported by the square centimeter of product represented. The exact product name matters because nearby HCPCS codes identify other tissue products or AmchoPlast variants.
Report Q4372 only with a primary procedure, not by itself. CMS treats it as an add-on paid within the primary procedure’s global period. Documentation should identify AmchoPlast EXCL, the associated wound procedure, and the product quantity in square centimeters. CMS classifies the code as technical-component-only; a separate code covers interpretation. The clinical application service is represented by the primary procedure, while Q4372 identifies the product. Do not substitute another product’s HCPCS code based only on wound size or site.
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 Q4372 pays more and less in Missouri
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$109.70 to $121.15
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | $119.49 | Unavailable |
| Metropolitan St. Louis, MO | $121.15 | Unavailable |
| Rest of Missouri | $109.70 | Unavailable |
How the Q4372 rate is calculated
Each of Q4372’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 · Q4372
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense3.81
3.81 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
3.8100
Conversion factor
$33.4009
Medicare rate
$127.26
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for Q4372
The CMS indicators that decide how Q4372 is paid alongside other services.
CMS payment indicators · Q4372
AmchoPlast EXCL, per square centimeter
| 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. |
Q4372 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4360Amniotic membraneAmchoPlast FD, per square centimeter
- Q4360 identifies AmchoPlast FD; Q4372 identifies AmchoPlast EXCL. Choose according to the product supplied, not the wound’s size or site.
- Q4373Membrane graftWrap LT, per square centimeter
- Q4373 identifies Membrane Wrap LT, a different named product. Q4372 is specific to AmchoPlast EXCL.
- 15271Skin substitute graftFirst 25 cm², trunk/limbs
- 15271 reports a primary wound application service when applicable; Q4372 identifies the AmchoPlast EXCL product and must accompany a primary procedure.
Q4372 billing questions
Can Q4372 be billed by itself?
No. CMS identifies Q4372 as an add-on code that must be billed with a primary procedure and is paid within that procedure’s global period.
How should the units be determined?
The descriptor is per square centimeter. Document the AmchoPlast EXCL quantity represented in square centimeters.
Is Q4372 the wound application service?
No. Q4372 identifies the AmchoPlast EXCL product; report the applicable primary procedure for the clinician’s wound application service.
Does Q4372 include interpretation?
CMS classifies it as technical-component-only and indicates that a separate code covers interpretation. Q4372 itself is not the interpretation service.
How is Q4372 distinguished from Q4360?
Both descriptors identify AmchoPlast, but Q4372 specifies AmchoPlast EXCL and Q4360 specifies AmchoPlast FD. Select the code matching the product used.
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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