HCPCS code Q9955: Perflexane injection, per milliliter2026 Medicare rate & RVUs in Missouri
Reports perflexane lipid microspheres administered as an ultrasound contrast agent to improve visualization during diagnostic ultrasound.
CMS doesn’t publish an office rate for Q9955 in Missouri.
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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On this page 9 sections
What Q9955 covers
Perflexane lipid microspheres are an injectable ultrasound contrast agent used to improve visualization during diagnostic ultrasound. The code identifies the contrast product, and imaging services report it when the agent is administered. It is distinct from sulfur hexafluoride, octafluoropropane, and perflutren lipid microsphere products, which have separate HCPCS codes.
CMS assigns Q9955 physician fee schedule status E, so the code is excluded from the physician fee schedule. If Medicare covers the item or service, payment is made under another payment method, with the Medicare contractor setting payment. The contractor also determines coverage. One unit represents one milliliter of perflexane lipid microspheres; report units corresponding to the volume administered.
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 Q9955 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.
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | Unavailable | Unavailable |
| Metropolitan St. Louis, MO | Unavailable | Unavailable |
| Rest of Missouri | Unavailable | Unavailable |
How the Q9955 rate is calculated
Each of Q9955’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 · Q9955
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 Q9955
Q9955 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.
Place of service · Q9955
Which rate does Medicare pay?
The POS code on the claim line (CMS-1500 box 24B).
POS 11 · non-facility rate · national
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Q9955 isn’t priced in this setting.
Q9955 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q9950Sulfur hexafluoridePer mL
- Use Q9950 for sulfur hexafluoride lipid microspheres. Q9955 is specific to perflexane lipid microspheres.
- Q9956Ultrasound contrastPer mL
- Q9956 identifies octafluoropropane microspheres. Q9955 identifies perflexane lipid microspheres.
- Q9957Perflutren contrastPer ml
- Q9957 identifies perflutren lipid microspheres. Select Q9955 only when the product administered is perflexane lipid microspheres.
Q9955 billing questions
What does one unit represent?
One unit represents 1 mL of perflexane lipid microspheres. Report units based on the volume administered.
How is this different from Q9957?
Q9955 identifies perflexane lipid microspheres. Q9957 identifies perflutren lipid microspheres, a different ultrasound contrast agent.
Does Medicare pay this code under the physician fee schedule?
No. CMS assigns status E, excluding Q9955 from the physician fee schedule; when Medicare covers the item or service, payment is under another method.
Who determines coverage and payment?
The Medicare contractor determines whether the item or service is covered and sets payment when it is covered.
What administration details should the record support?
Document that perflexane lipid microspheres were used and the volume administered, so the reported units correspond to the milliliters given.
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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