HCPCS code Q4363: Amniotic membrane, hydrated Amniobur, per sq cm2026 Medicare rate & RVUs in Illinois
Reports hydrated Amniobur amniotic membrane supplied for wound coverage, measured by square centimeter and billed with a primary application procedure.
Medicare pays $116.19–$130.69 for Q4363 in the office in Illinois, from Rest of Illinois to Suburban Chicago, IL. 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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What Q4363 covers
Q4363 identifies the hydrated form of an Amniobur amniotic membrane product used as a covering for a wound. A wound-care clinician, surgeon, or podiatrist may place it over a prepared wound in an outpatient wound clinic, office, or surgical setting. The code represents the product, not the wound assessment or the act of applying it. For example, it may be used during care of a chronic ulcer when a clinician selects an amniotic membrane covering.
Report the number of square centimeters represented by the product, supported by documentation of the product name, wound site, and area supplied or used. Q4363 is an add-on code and must be billed with a primary procedure; CMS pays it within that procedure's global period. It is technical-component-only, with a separate code covering interpretation. The primary application code is selected for the wound location and treated area.
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 Q4363 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
4 payment localities
$116.19 to $130.69
| Payment locality | Office | Facility |
|---|---|---|
| Chicago, IL | $127.89 | Unavailable |
| East St. Louis, IL | $117.08 | Unavailable |
| Rest of Illinois | $116.19 | Unavailable |
| Suburban Chicago, IL | $130.69 | Unavailable |
How the Q4363 rate is calculated
Each of Q4363’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 · Q4363
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 Q4363
The CMS indicators that decide how Q4363 is paid alongside other services.
CMS payment indicators · Q4363
Amniotic membrane, hydrated Amniobur, per sq cm
| 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. |
Q4363 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4364Amniotic membraneXPL product, per square centimeter
- Q4364 identifies an Amniobur XP membrane product. Use Q4363 for the hydrated Amniobur membrane form specified by this code.
- Q4365Wound productPer square centimeter
- Q4365 identifies the Amniobur DL membrane product. Distinguish it from Q4363 by the exact product form documented.
- Q4366Amniotic membraneDL AmnioBUR X-Mem, per sq cm
- Q4366 identifies a DL Amniobur X-membrane product. Q4363 represents the hydrated Amniobur membrane form instead.
Q4363 billing questions
Can Q4363 be billed by itself?
No. CMS identifies Q4363 as an add-on code, so report it only with a primary procedure.
How are units counted?
The code is measured per square centimeter. Document the product area supplied or used and report the corresponding square-centimeter units.
Which application procedure is reported with Q4363?
Pair it with the primary wound-graft application procedure appropriate to the wound's anatomical site and treated area, such as a code in the 15271–15278 family.
What documentation supports Q4363?
Record the Amniobur product form, wound location, and square-centimeter area supplied or used, along with the primary procedure.
Does Q4363 include 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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