$116.19–$122.80
Both are measured per square centimeter, but Q4238 identifies Derm-Maxx. Choose Q4239 only when the record identifies Amnio-Maxx or Amnio-Maxx Lite.
On this page
CMS RVU26D · Effective 2026-10-01
Q4239 Amniotic graft Medicare reimbursement rates in Michigan
Report Q4239 by square centimeter when Amnio-Maxx or Amnio-Maxx Lite is used during a separately reported wound graft application. Compare Q4239 office and facility rates across CMS payment localities in Michigan.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for Q4239 in Michigan?
Michigan has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
$116.19–$122.80
2 of 2 localities have a supported rate.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Skin substitutes
About Q4239: Amnio-Maxx or Lite wound graft supply
Report Q4239 by square centimeter when Amnio-Maxx or Amnio-Maxx Lite is used during a separately reported wound graft application.
Q4239 identifies the Amnio-Maxx or Amnio-Maxx Lite material used in a wound graft application. A wound-care clinician, podiatrist, or surgeon may place the material over a prepared chronic wound, such as a foot or lower-leg ulcer, in a clinic or outpatient procedure setting. The code identifies the product rather than the clinician’s work of applying it.
Select Q4239 only when the treatment record identifies Amnio-Maxx or Amnio-Maxx Lite. Report units in square centimeters, supported by the amount of material used and the documented wound dimensions; the number of wounds alone does not determine units. CMS classifies Q4239 as an add-on code, so it is billed with the primary application procedure and paid within that procedure’s global period. CMS also classifies it as technical-component-only: Q4239 does not represent professional interpretation, which is covered by a separate code.
CMS billing rules for Q4239
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
- Professional and technical components
- Technical-component-only code: a separate code covers interpretation.
Where the value comes from
- Work RVU0.00 · 0%
- Practice expense (office) RVU3.81 · 100%
- Malpractice RVU0.00 · 0%
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.
Q4239 compared with similar codes
Office rates for Michigan, from the same CMS release.
$116.19–$122.80
Q4235 identifies AmnioRepair or AltiPly. Select the product code from the documented material, even though both codes use square-centimeter units.
Q4240
No office rateCorecyte topical only 0.5 cc
Q4240 identifies topical-only CoreCyte measured in half-cubic-centimeter units. Q4239 identifies Amnio-Maxx or Amnio-Maxx Lite measured by square centimeter.
Compare Q4239 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Detroit →
Office / nonfacility
$122.80
Facility
Unavailable
Rest Of Michigan →
Office / nonfacility
$116.19
Facility
Unavailable
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Q4239 billing questions
Can Q4239 be billed without an application procedure?
No. CMS identifies Q4239 as an add-on code that must be billed with a primary procedure.
How are Q4239 units determined?
Each unit represents one square centimeter of Amnio-Maxx or Amnio-Maxx Lite material. Document the product used, the area of material applied, and the wound dimensions.
Does Q4239 include the work of placing the graft?
No. Q4239 identifies the graft material; report the appropriate primary application procedure for the clinician’s placement work.
When is Q4238 used instead of Q4239?
Q4238 identifies Derm-Maxx. Use Q4239 when the documented product is Amnio-Maxx or Amnio-Maxx Lite.
Does Q4239 include professional interpretation?
No. CMS classifies Q4239 as technical-component-only and assigns interpretation to a separate code.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
18,325Q4236,,Carepatch per sq cm,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,326Q4237,,"Cryo-cord, per sq cm",A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,327Q4238,,"Derm-maxx, per sq cm",A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,328Q4239,,Amnio-maxx or lite per sq cm,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,329Q4240,,Corecyte topical only 0.5 cc,C,,0.00,0.00,,0.00,,0.00,0.00,0.00,3,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
18,330Q4241,,"Polycyte, topical only 0.5cc",C,,0.00,0.00,,0.00,,0.00,0.00,0.00,3,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
18,331Q4242,,"Amniocyte plus, per 0.5 cc",C,,0.00,0.00,,0.00,,0.00,0.00,0.00,3,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00