HCPCS code Q4324: Amniotic graft, amnioTx, per square centimeter2026 Medicare rate & RVUs in Missouri
Reports AmnioTx amniotic tissue used for wound coverage, billed per square centimeter with the primary procedure that applies the graft.
Medicare pays $109.70–$121.15 for Q4324 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.
Your location
On this page 9 sections
What Q4324 covers
Q4324 identifies AmnioTx, an amniotic tissue product used as a covering for skin wounds, including chronic or difficult-to-heal ulcers. It represents the product, not the clinician’s work to prepare the wound or apply the graft. Physicians and other qualified practitioners involved in wound care may use it in an office or facility setting as part of a graft application service.
Report the documented square centimeters of product used and pair Q4324 with the primary application procedure selected for the treated site and wound area; it is not a standalone service. Keep the product record and procedure note consistent about the product and amount applied. CMS treats Q4324 as an add-on paid within the primary procedure’s global period. It is also classified as technical-component-only, with interpretation covered 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 Q4324 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 Q4324 rate is calculated
Each of Q4324’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 · Q4324
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 Q4324
The CMS indicators that decide how Q4324 is paid alongside other services.
CMS payment indicators · Q4324
Amniotic graft, amnioTx, 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. |
Q4324 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4323AlloPlyPer square centimeter
- Q4323 identifies Alloply, while Q4324 identifies AmnioTx. Select the code that matches the product documented as used.
- Q4325Wound productAcapatch, per square centimeter
- Q4325 identifies Acapatch, not AmnioTx. The product name in the record determines which supply code to report.
- 15271Skin substitute graftFirst 25 cm², trunk/limbs
- 15271 reports the primary graft-application procedure; Q4324 identifies the AmnioTx product and is reported as an add-on with a primary procedure.
Q4324 billing questions
Can Q4324 be reported by itself?
No. It is an add-on for the primary procedure that applies the graft, and CMS pays it within that procedure’s global period.
How should the quantity be reported?
Report the quantity in square centimeters. Documentation should identify AmnioTx and support the amount used for the graft application.
Is Q4324 the application procedure?
No. Q4324 identifies the AmnioTx product; a separate primary procedure reports application of the graft to the wound.
Does Q4324 include professional interpretation?
No. CMS classifies Q4324 as technical-component-only; a separate code covers interpretation.
How is Q4324 distinguished from Q4323 or Q4325?
These codes identify different wound products. Use Q4324 for AmnioTx, rather than selecting it based only on wound location or size.
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
Show the CMS file lines behind this rate
Fee sheets · Coming soon
Put Q4324 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
Join the waitlist