Q4230
No office rateCogenex flow amnion 0.5 cc
Q4230 identifies Cogenex Flow amnion and is measured per 0.5 cc; Q4229 identifies Cogenex amniotic membrane and is measured per square centimeter. Report the code for the product actually furnished.
On this page
CMS RVU26D · Effective 2026-10-01
Q4229 Amniotic membrane Medicare reimbursement rates in Iowa
Reports Cogenex amniotic membrane furnished for wound coverage, measured by the square centimeter and paired with the applicable skin-substitute application procedure. Compare Q4229 office and facility rates across CMS payment localities in Iowa.
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 Q4229 in Iowa?
Iowa has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$116.44
1 of 1 localities have a supported rate.
Payment area: Iowa
One mapped payment locality.
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 substitute product
About Q4229: Cogenex amniotic membrane supply
Reports Cogenex amniotic membrane furnished for wound coverage, measured by the square centimeter and paired with the applicable skin-substitute application procedure.
Q4229 identifies Cogenex amniotic membrane supplied for wound coverage, with the product quantity measured in square centimeters. It represents the product rather than the clinician’s wound preparation or application work. It may be used in wound-care settings where a clinician applies the membrane as part of treatment; the application procedure is reported separately. The code is specific to this Cogenex membrane and should not be substituted for another product code based only on the products’ shared amniotic origin.
Report Q4229 with the primary skin-substitute application procedure appropriate to the wound’s site and treated area, using documentation of the product and square centimeters furnished. CMS classifies it as an add-on code, so it is billed only with a primary procedure and paid within that procedure’s global period. Its valuation reflects practice expense, with no physician work or malpractice RVUs. It is technical-component-only; a separate code covers interpretation.
CMS billing rules for Q4229
- 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.
Q4229 compared with similar codes
Office rates for Iowa, from the same CMS release.
$145.07
15271 reports the application procedure for qualifying wounds on the trunk, arms, or legs; Q4229 reports the Cogenex membrane product used with an application procedure.
$148.29
15275 reports the application procedure for qualifying wounds at specified anatomical sites, including the head, face, neck, hands, feet, or genitalia. Q4229 reports the product, not the application.
Compare Q4229 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.
1 of 1 payment localities
Iowa →
Office / nonfacility
$116.44
Facility
Unavailable
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for Q4229 in Iowa.
PPRRVU2026_Oct_nonQPP.csv
18,319
- Code
- Q4229
- Physician work
- 0.00
- Practice expense
- 3.81
- Malpractice
- 0.00
GPCI2026.csv
53
- Locality
- Iowa
- Physician work
- 1.000
- Practice expense
- 0.915
- Malpractice
- 0.397
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.000 | 0.0000 |
| Practice expense | 3.81 | × 0.915 | 3.4862 |
| Malpractice | 0.00 | × 0.397 | 0.0000 |
| Total RVUs | 3.4862 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Iowa$116.44
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0 | 1 |
| Practice expense | 3.81 | 0.915 |
| Malpractice | 0 | 0.397 |
(0 × 1 + 3.81 × 0.915 + 0 × 0.397) × $33.4009 = $116.44
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
Q4229 billing questions
Can Q4229 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure. Pair it with the applicable skin-substitute application procedure.
How are units reported?
The code is measured per square centimeter. Document the product quantity furnished and the wound site and treated area supporting the reported units.
Is the application work included in Q4229?
No. Q4229 identifies the Cogenex membrane product; report the appropriate application procedure separately. CMS pays Q4229 within that primary procedure’s global period.
How does Q4229 differ from Q4230?
Q4229 identifies Cogenex amniotic membrane measured by square centimeter. Q4230 identifies Cogenex Flow amnion measured by 0.5 cc, so select the code matching the product furnished.
Does Q4229 include interpretation?
No. CMS classifies Q4229 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.
18,316Q4225,,"Amnio or derma tl, 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
18,317Q4226,,Myown harv prep proc sq cm,E,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
18,318Q4227,,Amniocore 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
18,319Q4229,,Cogenex amnio memb 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
18,320Q4230,,Cogenex flow amnion 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
18,321Q4232,,"Corplex, 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
18,322Q4233,,Surfactor /nudyn 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
5006102,IL,15,SUBURBAN CHICAGO,1.007,1.027,1.772
5106102,IL,99,REST OF ILLINOIS,1.000,0.913,1.563
5208102,IN,00,INDIANA,1.000,0.927,0.486
5305102,IA,00,IOWA,1.000,0.915,0.397
5405202,KS,00,KANSAS,1.000,0.904,0.504
5515102,KY,00,KENTUCKY,1.000,0.889,0.915
5607202,LA,01,NEW ORLEANS,1.000,0.941,1.136