HCPCS code A2004: Xcellistem, per 1 mg2026 Medicare rate & RVUs in Michigan
Report Xcellistem in 1 mg units; Medicare contractor pricing under the physician fee schedule and contractor coverage judgment govern A2004 claims.
CMS doesn’t publish an office rate for A2004 in Michigan.
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 8 sections
What A2004 covers
A2004 identifies Xcellistem for reporting in 1 mg units. Its quantity basis is mass, unlike nearby product codes whose descriptors use square centimeters or another measure. The code identifies the product and amount rather than a wound site or application method. Report one unit for each milligram of Xcellistem furnished. This is a HCPCS Level II code.
Medicare assigns A2004 status C, or carrier priced: there is no national payment amount, and the Medicare Administrative Contractor sets payment for each claim under the physician fee schedule. The contractor also determines coverage. CMS classifies A2004 as technical-component-only, with a separate code covering interpretation. The per-milligram unit is the billing quantity for this product.
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 A2004 pays more and less in Michigan
| Payment locality | Office | Facility |
|---|---|---|
| Detroit, MI | Unavailable | Unavailable |
| Rest of Michigan | Unavailable | Unavailable |
How the A2004 rate is calculated
Each of A2004’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 · A2004
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.00
0.00 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
0.0000
Conversion factor
$33.4009
Medicare rate
$0.00
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for A2004
The CMS indicators that decide how A2004 is paid alongside other services.
CMS payment indicators · A2004
Xcellistem, per 1 mg
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 9 | The concept doesn’t apply. |
| Bilateral (modifier 50) | 9 | The concept doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 9 | The concept doesn’t apply. |
| Co-surgeons (62) | 9 | The concept doesn’t apply. |
| Team surgery (66) | 9 | The concept doesn’t apply. |
| Professional/technical | 3 | Technical component only. |
A2004 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- A2023InnovaMatrix PDPer 1 mg
- A2023 identifies Innovamatrix PD and uses a 1 mg unit. A2004 identifies Xcellistem; select the code for the product furnished.
- A2001Wound matrixAC, per square centimeter
- A2001 identifies Innovamatrix AC and uses a square-centimeter unit. A2004 identifies Xcellistem and uses a 1 mg unit.
- A2002Wound matrixMirragen, per square centimeter
- A2002 identifies Mirragen ADV wound material and uses a square-centimeter unit; A2004 identifies Xcellistem and uses a 1 mg unit.
A2004 billing questions
How many units should be reported?
One unit represents 1 mg of Xcellistem. Report units based on the milligrams furnished.
Should A2004 be selected instead of a wound product billed per square centimeter?
Select A2004 for Xcellistem. Other products are reported using their own product codes and unit descriptors.
Does Medicare publish a national payment amount for A2004?
No. Status C means the Medicare Administrative Contractor sets payment for each claim under the physician fee schedule.
Who decides whether Medicare covers A2004?
The Medicare contractor makes the coverage decision.
Is interpretation included in A2004?
A2004 is 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
Fee sheets
Put A2004 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
Build my fee sheet